Argentina
Pattern 1892 Copper Piefort, ESSAI de Monnaie with national shield featured on backside. Struck in copper and also more unusual at 6.01 grams, and double thickness, than are the standard examples in several other different metals. Valued by $700 by Carlos Janson as his number 48.5. Mint State with most of its attractive orange patina intact.
Estimate: 300-400 USD