Watch List notes:

Central American States, proof 50 pesos medallic coinage, 1970, 20th anniversary of ODECA, in original packaging. KM-X1. 20.08 grams. Lustrous cameo Proof with just a few tiny bagmarks, housed in original small wallet with Banco Centroamericano de Integracion Economica certificate indicating fineness of 900/1000 (90% fine, 0.5787 oz AGW), limited edition.
(700 - 1000 USD)