Costa Rica (Central American Republic), 2 reales, 1846JB counterstamp (Type V) on a Potosi, Bolivia, cob 2 reales, 1759(q). 6.29 grams. Full AVF countermark on About Fine host with undercoin date boldly visible, attractively toned (KM lists host as Philip V but this host is Ferdinand VI).
Estimate: $150 - 225