Panama, proof copper-nickel clad copper 1 balboa, 1982, General Torrijos, rare with only the obverse frosted. KM-76. 22.35 grams. Mirror fields (cameo on obverse) with minimal flaws and marks, starting to tone, from a mintage of only 50 pieces. Pedigreed to the Richard Stuart collection. (Estimate: $200 - 300)