AI Appraisal Estimate

This is a standard circulation Japanese 10 Yen coin, likely minted during the Showa era (1926-1989). The coin is circular and struck in a bronze alloy, typically composed of 95% copper, 3-4% zinc, and 1-2% tin. On the reverse side shown, the large numeral '10' is prominently displayed in the center, flanked by bay laurel branches symbolizing achievement and peace. Below the numeral is the mintage date written in Japanese kanji. The coin features a plain, smooth edge rather than a reeded one, which is characteristic of pieces minted after 1958. Based on its appearance, the metal shows a moderate amount of circulation wear, including surface abrasions and a characteristic dark brown oxidation patina common to copper-based currency. There is visible smoothing on the high relief areas of the number and the leaves. Generally, these coins are 23.5mm in diameter and weigh approximately 4.5 grams. This specific example appears to be an average-circulated piece without significant damage like deep gouges or bending, making it a common but well-preserved historical artifact of Japanese monetary history.

Upon visual examination of this Japanese 10 Yen bronze coin, I have identified it as a standard issue post-1958 'Nami-fuchi' (plain edge) type. The coin displays a characteristic chocolate-brown patina consistent with its high copper content (95%) and shows moderate circulation wear. I note visible softening on the laurel leaf tips and the central numeral '10', which classifies this piece in 'Fine' to 'Very Fine' circulated condition. While the strike appears authentic to the Showa era mintage, the coin lacks the 'Giza-ju' (reeded edge) found on more valuable early issues (1951–1958). The market for circulated Showa 10 Yen coins is extremely saturated; hundreds of millions were minted annually. Consequently, they possess virtually no numismatic premium over their face value (approx. $0.07 USD) unless they are in Mint State (MS) or contain an error. Comparables in similar condition frequently sell in bulk lots where the individual value remains negligible. The primary demand for such pieces is as historical curiosities or filler for entry-level collections. Limit of Liability: This appraisal is based solely on digital images. Without a physical inspection, I cannot verify the exact weight (4.5g) or metallic composition to rule out contemporary counterfeits or 'magician's coins.' A professional in-person inspection would be required to examine the edge for signs of seam manipulation and to conduct a destructive or XRF test for metallurgical purity. However, given the commonality of this issue, the cost of scientific authentication would significantly exceed the market value of the coin itself.