Watch List notes:

SALVADOR: AE 5 centavos pattern, 1892-C.A.M., KM-Pn7, off-metal strike in copper, NGC graded Proof 58 BN, RRRR, ex Richard Stuart Collection. A quick look at the search engines revealed no examples of this piece. It is the only piece so far certified by NGC or PCGS (March 2017). The coin pictured in the NGC World Coin Price Guide for this type is this coin. Possibly unique.

Estimate: 400-600 USD