Costa Rica, 2 reales, "lion" countermark (Type VI, 1849-57) on a Costa Rica (Central American Republic) 2 reales 1849JB. 5.81 grams. Clearly far superior to KM Plate Coin for this one-year variety with tiny countermark, the host AVF (with slightly crude rims, as made), but the countermark AXF and very deep.
Estimate: $100 - 150