Catalog
1 Mon 'Nyōyakushinpō'
| Issuer | Japan |
|---|---|
| Year | 859-870 |
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| Composition | Log in to see details |
| Weight | 2.1 g |
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| Obverse description | Log in to see details |
|---|---|
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| Reverse description | The reverse is entirely plain and uninscribed, presenting a flat, featureless field bounded by a raised square rim surrounding the central square perforation and a plain outer raised rim. No legends, devices, or decorative elements are present. The cast surface shows the characteristic texture of Japanese Nara- and Heian-period bronze cash coinage. |
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| Mintage | ND (859-870) - DHJ# 1.50; large size and characters - ND (859-870) - DHJ# 1.51; small size, top of 饒 touches outer rim - ND (859-870) - DHJ# 1.52; small size, 神 to the right of hole - |
| Additional information |
The Jōgan Eirihō, struck between 859 and 870 under Emperor Seiwa, was the fifth of Japan's Twelve Ancient Coins — the Kōchōjūnisen — issued by the Ritsuryō state in its attempts to establish a functioning copper coin economy. That project was failing by this point. Peasants hoarded coins, court officials accepted them only under compulsion, and the government repeatedly had to mandate their use by law. The Nyōyakushinpō is among the later, increasingly debased issues in that sequence, and official minting effectively collapsed within decades of this coin's production.