Its prescribed weight was 5 monme 5 bu (approximately 20.6 grams), its prescribed composition was 78 percents of copper, 12 percents of lead, 10 percents of tin; however, according to the analysis conducted by Japan Mint during the Meiji period, it was 0.037 percents of silver, 81.307 percents of copper, 9.742 percents of lead, 8.261 percents of tin, 0.056 percents of iron, 0.193 percents of zinc, 0.035 percents of antimony, 0.182 percents of arsenic, and 0.084 percents of sulfur.
規定量目は五匁五分、規定品位は銅78%、鉛12%、スズ10%と定められたが、明治時代の造幣局の分析では銀0.037%、銅81.307%、鉛9.742%、錫8.261%、鉄0.056%、亜鉛0.193%、アンチモン0.035%、ヒ素0.182%、硫黄0.084%となっている。