Potosi, Bolivia, tin uniface reverse trial 2 soles, 1852 FM, rare. KM-PN2 but in tin. 4.36 grams. Deep strike with choice full details and some luster, a couple minor rim nicks, the other side with circular lapping marks, reeded edge, light steel-gray color, first example we have encountered.
Estimate: 200 - 300 USD