Italy
Naples & Sicily. Carlo III di Borbone gold 1/2 Carlino 1758 IA-MM/R AU Details (Mount Removed) NGC, Domenico Maria Mazzara as mintmaster, type of KM164 and MIR-342/3. A later off-metal striking in gold, the die rust apparent throughout the fields, with evidence of mount removal along the edges. Apparently very rare and the first we have seen.
Estimate: 2000-2500 USD