1 Mon 'Jōwashōhō' - Ninmyō

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Obverse lettering	承寳　和　昌 (Flourishing treasure of the Jōwa era)
Reverse description	Plain reverse displaying a central square perforation framed by a raised square boss, with a flat, unadorned field between the boss and the outer rim. No inscriptions, symbols, or decorative elements are present on this face. The surface shows extensive green and brown patination consistent with age and burial, typical of Heian-period Japanese cast coinage. The raised rim is visible around the circumference, and the casting seam may be discerned on some examples.
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Additional information	The Jōwashōhō was the sixth coin issued under Japan's Kōchōjūnisen system — a succession of twelve imperial copper issues spanning 708 to 963 AD, each progressively debased and increasingly ignored by a populace that preferred rice and silk as exchange media. By the time of Emperor Ninmyō's reign, imperial coinage had already lost most of its practical credibility, with provincial populations routinely refusing state-minted copper in favor of commodity barter. The coins were still produced, and official edicts still demanded their acceptance, but enforcement was largely theater.