France
Republic - Louis XVI copper Essai 24 Livres 1793-A MS64 Brown NGC, Paris mint, Maz-53, KM626.1. Normally this issue was struck in gold and this is one of only two Essais struck in copper to receive the MS64 designation. No others are graded by NGC to date and there is evidence of double striking on the obverse effigy producing a sharp strike on both sides. The fields are smooth with traces of red mixed in as well with very bold details on both sides overall.
Estimate: 1500-2500 USD