The lead contained in this miscellaneous was 2 to 3%, which means that its containment was larger than keicho-gin, and a large amount of lead must have remained by cupellating method to seperate silver and bronze, a nanban (Western Europe) -style cupellating method.
尚この雑分中の鉛の含有率は2～3%と慶長銀と比較して高くなっており、南蛮吹による銀銅吹分けに伴いかなりの鉛が残存したものと考えられる。