Watch List notes:

JAPAN: AR gin kwan (33.11g), Opitz page-280; Munro page-5, 33mm, "silver ring money" silvered copper ring; with much original plating intact, Fine, ex Charles Opitz Collection. Various forms of ring money were used in Eastern Asia, including Japan, for at least 2,500 years; usually made of hollow copper with a thin layer of gold (kin) or silver (gin) applied to the outside surfaces; an intriguing piece which is sure to delight the advanced collector of Japanese numismatics or primative money.

Estimate: 100-125 USD