Costa Rica
Republic gold 1/2 Onza 1850-JB AU50 NGC, KM100. With attractive, lightly-toned surfaces, this one-year type features an Indian woman leaning against a column. Seldom encountered, especially in finer designations, this unique gold coin is known as a 1/2 Onza because its weight is equivalent to 1/2 of an 8 Escudo.
Estimate: 100-1250 USD