Watch List notes:

Potosi, Bolivia, 1 melgarejo, 1865FP, NGC AU 53. KM-146. Very light toning over muted luster, the obverse fields slightly hairlined, good strike but with slightly weak centers, popular one-year type that is technically a monetary medal but (along with its fractions) has been listed as a coin in KM for a long time now. NGC 4687913-017.

Estimate: $400-600