JAPAN: AV kin kwan (5.95g), Opitz page-280; Munro page-5, 19mm, "gold ring money" gilt copper ring; with partial original gilding intact (mostly on the interior), 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 primitive money.
Estimate: 100-150 USD