Obverse

Reverse

100 Mon (or fantasy token/souvenir)

Tempo Tsuho (Oban-shaped pattern or large format / token reproduction)

Japan · Introduced in 1835 (Edo period)

An oval-shaped Japanese coin featuring a central square hole with vertical kanji inscriptions, mimicking the classic Tempo Tsuho design but rendered in an unusual large format or wooden texture.

Country: Japan
Year: Introduced in 1835 (Edo period)
Denomination: 100 Mon (or fantasy token/souvenir)
Metal: Bronze/Brass or wood-textured/cast alloy
Grade: Circulated / Replica condition with visible surface texture and patination

This report is AI-generated and can be wrong. Always verify grade, authenticity, and value with a qualified dealer or certified grading service before buying, selling, or insuring.

Identified September 18, 2026More japan coins →

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Overview

An oval-shaped Japanese coin featuring a central square hole with vertical kanji inscriptions, mimicking the classic Tempo Tsuho design but rendered in an unusual large format or wooden texture.

Historical significance

The Tempo Tsuho was introduced by the Tokugawa shogunate in 1835 to help alleviate a financial crisis. They were originally minted in copper/bronze and circulated widely until the Meiji Restoration.

Obverse (front)

Features the vertical inscription reading 'Tempo' at the top and 'Tsuko' at the bottom, separated by a central square hole, with an additional mint or official hallmark symbol below.

Reverse (back)

Features vertical kanji inscriptions denoting denomination and mint authority around a central square hole, set against a textured background.

Estimated value

$10-$50 depending on authenticity and material (souvenirs and replicas are common)

What drives this coin's value

Material composition, authenticity as an original Eisho-era piece versus modern replica, and overall preservation of the kanji details.

Grade assessment

Circulated / Replica condition with visible surface texture and patination

Mintage & rarity

Millions were originally produced; however, large-format or novelty reproductions vary greatly in rarity.

Authenticity & counterfeit red flags

Check for correct weight, metal composition, and sharpness of the kanji characters. Many modern tourist replicas and wooden novelty items exist.

Notable varieties & errors

Various mint marks and edge file marks from the original Edo period production.

Similar coins

Other Japanese Edo-period sen and oval coins such as the Bunkyu Eihō or Kanei Tsūhō.

Care & preservation

Store in a cool, dry place away from direct sunlight. Handle by the edges or wear clean cotton gloves to avoid transferring skin oils.

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