This chogin was a flat "namako" type silver mass where silver and bronze were mixed, upon which hallmark of "joze", "ho" and Daikokuzo" were inscribed.
この丁銀は銀に銅を加えた合金を鋳造した平たい「なまこ」型の銀塊に「常是」、「寳」の文字および「大黒像」の極印が打たれたものである。