---
title: "Ana-sen Market Flash Report — Reading the Market from a Recent Sale at ¥1,980"
url: "https://ittendo.com/en/article/news-jp-1277-fb1649d4"
site: "ITTENDO"
type: "article"
category: "穴銭"
published: "2026-05-29T09:00:00Z"
source: "一点堂編集部"
lang: "en"
---
# Ana-sen Market Flash Report — Reading the Market from a Recent Sale at ¥1,980

> A flash report on the ana-sen market anchored in recent transaction data. Using a ¥1,980 Mercari sale as an example, the ITTENDO editorial team explains how to distinguish median prices from thin-market activity, and the three factors that determine value.

The "Market Flash Report" uses the latest auction and flea-market transaction data as a starting point to read the current state of the ana-sen (穴銭) market. Understanding the supply and demand behind the numbers makes it harder to be swayed by price swings. Because ana-sen have a large number of listings and a wide price range, the first skill required is the ability to view the market by breaking it down coin by coin. A systematic overview of ana-sen as a whole is available in the [Detailed Guide to Ana-sen (Kanei Tsūhō & Tenpō Tsūhō)](/coinpedia/ana-sen-001-overview).

## What Are Ana-sen — Mastering the Basics of Edo-Period Coinage

Ana-sen is the collective term for round coins with a square hole in the center, and they are indispensable when discussing Japanese currency of the Edo period. The most representative is the Kanei Tsūhō (寛永通宝), whose minting began in Kanei 13 (1636), and which was produced in large quantities at mint houses (zenza) throughout the country for more than 200 years thereafter. The Tenpō Tsūhō (天保通宝), which appeared in Tenpō 6 (1835), is known for its distinctive oval shape and high denomination of "one hundred mon," and it maintains a special popularity even within the world of ana-sen.

The appeal of ana-sen lies in the fact that value differs greatly depending on the mint location, period, and script style, even among coins bearing the same name. Even within Kanei Tsūhō alone, there are distinctions between Ko-Kanei (old Kanei) and Shin-Kanei (new Kanei), between mother coins (bosen, 母銭) and circulating coins (tsūyōsen, 通用銭), and fine differences between the various regional mint houses, making the depth of collecting profound. This fineness of classification is both the first barrier to reading the market and, at the same time, the essence of its appeal.

The reason ana-sen are so diverse stems from the decentralized nature of the Edo-period monetary system. Mint houses were established throughout the country under shogunal authorization, and each produced coins according to the conditions of their local metal stock and casting molds, so even the same Kanei Tsūhō developed regional characteristics. Some coins carry characters or symbols on the reverse indicating their mint house, and deciphering these differences lies at the heart of ana-sen collecting.

Kanei Tsūhō came in one-mon and four-mon denominations; the four-mon coin is an easily identifiable type because it bears a wave pattern on the reverse. The Tenpō Tsūhō circulated as a high-denomination coin worth one hundred mon per piece and played a role in supporting the economy of its time. Because the differences in denomination and use are reflected in shape and size, grasping the framework of one-mon, four-mon, and one-hundred-mon coins first creates a useful map for navigating the vast world of ana-sen.

Mint houses were scattered throughout the country, and because each used locally sourced copper for casting, the quality and color of the metal also varied by region. Even among Kanei Tsūhō, some regional copper is strongly reddish, while other examples have a slightly yellowish tint. These differences in metal, alongside script style and dimensions, serve as clues for interpreting lineage and add depth to the classification of ana-sen.

## Three Factors That Determine Value — Rarity, Condition, and Demand

The value of an old coin is determined by three axes: "rarity," "preservation condition (grade)," and "market demand." In the case of ana-sen, rarity skyrockets for coins from mint houses with small production runs and for trial-strike pieces; preservation condition is evaluated by the clarity of the characters (script) and the degree of surface wear; and demand is concentrated on the two major popular types, Kanei Tsūhō and Tenpō Tsūhō. The overall structure of value is explained in detail in [Factors That Determine the Value of Old Coins](/coinpedia/basics-001-value-drivers).

Particularly important for ana-sen is the distinction between "mother coins" (bosen) and "circulating coins" (tsūyōsen). Mother coins are the originals used to make casting molds; surviving examples are limited, and the engraving of the characters is deep and clear. While circulating coins trade in the range of a few hundred to a few thousand yen, mother coins can transact at levels ranging from tens of thousands to hundreds of thousands of yen, making the ability to tell them apart the starting point for any value judgment. [Standards and How to Read Old Coin Grading](/coinpedia/basics-003-grading) is a useful reference for thinking about condition evaluation.

On the demand side, buyers concentrate on the two major popular types — Kanei Tsūhō and Tenpō Tsūhō — while independent collecting communities also exist for peripheral areas such as regional coins (chihōka, 地方貨), picture coins (esen, 絵銭), and privately cast coins (shichūsen, 私鋳銭). Types with strong demand have stable prices, while those with thin demand can see prices move sharply on a single listing, so knowing which character your target area has will keep you from being confused by price swings.

In condition evaluation, how much of the raised portions of the characters remains is the decisive factor. Coins that circulated for a long time have worn, flat characters with lost sharpness in the engraving. Conversely, coins with a short circulation history or well-preserved examples retain the sharp engraving from the time of minting, and the difference in condition between coins of the same type translates directly into a price difference. Developing an eye for reading the degree of wear from photographs raises the accuracy of market judgment.

The depth of demand also correlates with the richness of specialist literature and research available for that type. Types with well-developed research have clear classification standards and are easier for buyers to evaluate, leading to active trading. Conversely, types with sparse documentation tend to have indeterminate value and sporadic transactions, and the gradations in demand directly mirror the degree of market stability.

## How to Read the Market — Distinguishing Median Prices from Thin Markets

Most recently, a "Kaga Domain Trial-Strike Coin, Kaetsunō Sanbyaku (加越能三百) Current, Regional Coin, Tenpō Tsūhō-Type Picture Coin, Japanese Old Coin" sold on Mercari for ¥1,980 (2026-05-28). It is premature to judge the entire market from this single transaction, but it does provide one data point for gauging the transaction level for ana-sen peripherals including regional coins and picture coins. Because ana-sen have a large number of listings, with price ranges running from high-denomination Tenpō Tsūhō down to Kanei Tsūhō priced in the tens of yen, it is necessary to view the market separately by coin type.

When looking at price trends, the basic approach is to use the median rather than the mean as the benchmark. For mint-house coins and mother coins with few transactions, the overall market tends to be pulled by a single high-value hammer price — a condition known as a "thin market" (usubashō, 薄商い). Make sure to distinguish between moves driven by genuine demand and isolated single-lot appearances. The background behind movements in the Kanei Tsūhō market is analyzed in detail in [Why the Kanei Tsūhō Market Moved](/article/news-jp-0167-6581bc47).

On flea-market apps and auction sites, coins are often listed without the type being accurately identified, so a rare variety may be mixed in at a price below market, or a common circulating coin may be listed at a high price. Rather than judging by the words in the title alone, reading the script style and dimensions from photographs and cross-referencing against multiple completed-sale examples is an approach that is particularly effective for ana-sen.

Because there are many ana-sen listings, looking at the distribution of completed prices in a single view quickly builds a sense of the market. If the same type appears in many listings, the depth of demand is apparent; if a type rarely appears, it is either rare or the market for it is simply thin. Looking at multiple hammer prices in chronological order and grasping whether prices are stable or moving helps prevent impulsive overpayment at high prices.

If you are targeting mother coins or rare varieties, the prudent approach is to verify prices across multiple sales channels. Flea-market apps, online auctions, and specialist dealer inventories each have different pricing structures. By comparing the levels across channels, you can avoid being pulled by overpricing or underpricing formed within a single channel and instead grasp the true market value of the coin type.

## Structural Background of the Market — The Bipolar Structure of Mass-Produced and Rare Coins

The most distinctive feature of the ana-sen market is that supply is extremely bipolar. Kanei Tsūhō circulating coins were minted in quantities on the order of hundreds of millions, so they can still be obtained in large quantities at low prices today regardless of condition. On the other hand, rare types produced only at specific mint houses, types with short minting periods, and trial-strike pieces have limited surviving numbers, and their prices rise by an order of magnitude.

Because of this bipolar structure, the value of ana-sen changes completely depending on "whether you can identify the coin type." If you have the eye to read subtle differences in script style, reverse characters, and dimensions, there is a possibility of picking out rare varieties from a cheap lot; conversely, a misclassification can lead to selling a rare variety for next to nothing. This is why ana-sen collecting is called "the hobby of classification."

Circulating coins, whose supply is plentiful, have maintained stable prices over the long term and remain accessible at beginner-friendly price points. Rare varieties, by contrast, are listed so infrequently that once they appear on the market, multiple collectors compete for them and prices spike momentarily. Even though they fall under the same label of "ana-sen," it is important to be aware that the mechanism of price formation differs greatly by coin type.

Regional coins, privately cast coins, and picture coins occupy a position even further outside the bipolar structure. Many of these were produced through circumstances different from official currency, and research on them is still developing, so coin types whose valuation is not yet fully established remain. The lack of a complete system means there is room for discoveries for knowledgeable collectors, making this an area that further extends the depth of ana-sen collecting.

The bipolar structure also creates fertile ground for beginners and advanced collectors to coexist within the same category. This is because a natural progression is built in, where collectors who have learned the basics through inexpensive circulating coins gain experience and broaden their interest toward rare varieties. The width of the price range simultaneously lowers the barrier to entry and provides depth, enhancing the appeal of the hobby as one that can be enjoyed for a long time.

## Practical Appraisal — Reading Script Style and Dimensions

In the practical evaluation of ana-sen, the first step is to examine the script style of the characters. For Kanei Tsūhō, the script is used to distinguish whether the coin is Ko-Kanei or Shin-Kanei and which mint-house lineage it belongs to; for Tenpō Tsūhō, the fine details of the engraving are used to differentiate between "Honza" (本座, official mint) coins and the "hankasansen" (藩鋳銭, domain-cast coins) from various regions. Next, the diameter and weight (ryōme, 量目) are measured, and the casting lineage is narrowed down based on the deviation from standard values. Finally, the casting texture and wear of the surface metal, and whether any post-production work has been done, are checked.

Identifying mother coins requires particular care. There are methods of polishing circulating coins to make them look like mother coins, and of artificially aging modern reproductions, so judgment must be made comprehensively based on the depth of the engraving, the sand-mold texture, and the finish of the rim. High-value pieces are more likely to be the targets of such work, and maintaining a habit of thorough verification prevents losses. The key points for identification are summarized in [How to Spot Fakes and Altered Coins](/coinpedia/basics-004-fakes).

To become proficient in practical appraisal, it is helpful to keep one reliable classification catalogue at hand and develop the habit of comparing physical coins against the plate illustrations. Because ana-sen lineages are distinguished by subtle differences in the thickness of characters and the angle of brush strokes, verbal description alone makes identification difficult, and comparison against plate illustrations is decisive. Use calipers and a precision scale for measurement, and by recording dimensions and weight as numerical data, you will develop your own internal standard of judgment.

Measured values serve as objective grounds for lineage identification. Even within Kanei Tsūhō, the standard diameter and weight differ by mint house, so by comparing the caliper and scale readings against the catalogue standards, lineages that cannot be narrowed down by script alone can be confirmed. Keeping a record of the measurements also helps when comparing against other specimens later, increasing the reproducibility of judgments.

The finish of the rim (mimi, 耳) is also an identification point that must not be overlooked. The treatment of the rim produced during the casting process has characteristic features that vary by lineage, and differences in how the file was applied and the thickness serve as clues. The way the rim is dressed often differs between mother coins and circulating coins, and the precision of identification is supported by the careful observation of the sides as well as the obverse and reverse characters.

## Long-Term Holding Strategy — Collecting While Cultivating a Classifying Eye

Because many ana-sen types have a low unit price, the strategy of "handling a large number of coins to cultivate a classifying eye" suits the long term. By handling many inexpensive circulating coins and absorbing the differences in script style and dimensions through experience, the ability to identify rare varieties is developed. Rather than immediately diving into expensive mother coins or rare varieties, investing time in training the eye first is an approach that tends to pay off in ana-sen.

Humidity and oxidation are the enemies of storage. Because copper coins develop verdigris in high-humidity environments, they should be stored individually in a dry environment. To track market movements, checking the hammer-price history for the ana-sen category at [View Ana-sen Hammer Price Data in a List](/auctions/ana-sen/records) and continuously monitoring the transaction levels for the types you are targeting will keep your judgment on track.

Organizing the coins you have collected by lineage and arranging them classified by region of origin and script style makes the overall picture of your collection visible. Differences in condition within the same lineage and missing types become clear, and it becomes easier to determine what to target next. Because the price per coin is held down, ana-sen offer the pleasure of taking your time to complete a systematic collection, and the classifying eye cultivated in that process becomes an asset in its own right for the collector.

When organizing, arranging coins on mounts or trays by axes such as region of origin, denomination, and script style makes the overall picture of the collection and any gaps immediately apparent. Because the price per coin is kept down, the collection can be expanded systematically without strain. The time spent looking at the collected coins and thinking about what to add next is itself practical training that sharpens the classifying eye.

For ana-sen, where it is easy to accumulate numbers, systematizing storage determines long-term satisfaction. Assigning a fixed storage position by coin type and attaching measurement values and acquisition records gives the collection documentary value. Rather than simply stockpiling, the habit of organizing and recording raises the value of the collection when reviewed later and elevates collecting into an intellectual pursuit.

## Connection to the International Market — Context as East Asian Coinage

Ana-sen are not uniquely Japanese; they belong to a common East Asian monetary form whose origins lie in the square-holed round coins (hōkō en-sen, 方孔円銭) of China. As a result, the context is easy for overseas collectors to understand, and Kanei Tsūhō is internationally known as the iconic coin of Edo-period Japan. In recent years, overseas buyers have entered through cross-border e-commerce platforms, generating new demand for well-preserved Tenpō Tsūhō and rare mint-house coins.

However, in overseas markets, evaluation does not always extend to the fine details of classification, and script-style differences may not be reflected in prices to the same degree as in the domestic market. Rare varieties tend to be more properly valued in the domestic market, where classifying knowledge exists, and it is useful to select the sales channel depending on the coin type.

On the other hand, overseas enthusiasts who collect East Asian coinage together tend to favor types like Kanei Tsūhō, which survive in large numbers, as introductory subjects. A domestic circulating coin that seems commonplace may have a certain level of demand abroad as a fragment of East Asian monetary history, and the fact that coins are evaluated differently domestically and internationally by type is something worth keeping in mind when considering buying and selling.

Overseas enthusiasts tend to collect East Asian coinage systematically together, enjoying the cultural connections by lining up square-holed round coins from Japan, China, and Korea side by side. In that context, types like Kanei Tsūhō that survive in large numbers are valued as accessible entry points. A circulating coin that looks ordinary domestically can have value abroad as a piece of regional monetary history, and the difference in perspective creates its own interest.

International evaluation tends to be reflected more readily in high-denomination pieces in good condition. Types with a distinctive appearance and good visual presence, like Tenpō Tsūhō, attract attention even in overseas exhibitions and auctions. On the other hand, rare Kanei Tsūhō varieties whose value lies in subtle script-style differences are most properly evaluated domestically, where the culture of classification is shared, making it worthwhile to select the market by coin type.

## Mistakes Beginners Often Make

The three most common mistakes are: judging by appearance alone, confusing mother coins with circulating coins, and immediately venturing into the high-price range. In particular, because Tenpō Tsūhō has many types of domain-cast coins, confusing a Honza coin with a regional coin can drastically distort value judgment. [Tenpō Tsūhō Value Cannot Be Judged by Appearance](/article/news-jp-0184-277444b6) is a useful reference for misconceptions surrounding Tenpō Tsūhō value judgment. The fact that even the same Kanei Tsūhō can differ greatly in value depending on conditions is explained in detail in [Why the Same Kanei Tsūhō Can Be Worth 100 Times More](/article/news-jp-0178-1825b003).

Another pitfall that is easy to fall into is improving the appearance of a coin through polishing or cleaning. Because the original surface and the calm color of copper coins are themselves what is valued, forced polishing destroys surface information and actually reduces value. Leaving coins untouched and preserving them as-is is ultimately the choice that best protects their value.

Another trap to avoid is taking the words of a listing title at face value. Expressions such as "rare" or "unusual piece" are nothing more than the seller's subjective opinion; the actual value is conveyed by the script style and condition readable from the photographs. Developing the habit of judging by the information in the physical coin rather than by words will allow you to continue making sound acquisitions without being misled by inflated descriptions.

Mistakes in choosing storage bags or cases are also surprisingly common. Soft cases made of polyvinyl chloride (PVC) can damage copper over long-term storage, so it is safer to choose neutral storage materials. If you store coins carelessly because they are inexpensive and allow verdigris to progress, even a piece selected with a hard-won classifying eye will lose value. Collection includes creating an environment that protects the coins you have gathered.

## ITTENDO's Conclusion

Ana-sen is a category with a wide price range — from inexpensive circulating coins to expensive mother coins and rare varieties — in which identifying the coin type is the core of value judgment. For beginners, the prudent approach is to start with circulating coins, where transactions are plentiful and price data is abundant, and to cultivate a classifying eye by handling many examples and observing differences in script style and dimensions. For rare varieties and mother coins, entering once you have multiple data points and your own judgment criteria in place will help you avoid mistakes with thin-market types. At ITTENDO, we make it possible to track the "now" of ana-sen based on past auction history and market charts. Continuously monitoring the types you are interested in will make it harder to miss changes in the market.

Ana-sen, though modest in price per coin, are second to none in depth of classification and history. The pleasure unique to this category lies in the process of handling many coins, training your eye, and deciphering differences in region of origin and script style. The journey of starting with inexpensive circulating coins and gradually completing a systematic collection will, before you know it, crystallize into a reliable connoisseur's eye.

The world of ana-sen is connected seamlessly from circulating coins costing a few tens of yen to mother coins costing hundreds of thousands of yen. The depth unique to this category lies in being able to climb that seamlessly connected path one step at a time, guided by knowledge. Handle the coins, look at many, and decipher regions of origin and script styles. That accumulation will in time return to you as a discerning eye that is difficult to acquire anywhere else.