Watch List notes:

Colombia, 50 centavos, 1963, mint error struck on aluminum-bronze alloy planchet, PCGS MS 67, ex-Eldorado. Restrepo-unl (cf 420.6); KM-unl (cf 217). Bright and highly lustrous in golden brass color, with no marks or wear at all, a couple hairline die-cracks on obverse, first and only off-metal specimen known to us (regular issue is copper-nickel). PCGS #85758104. Pedigreed to the Eldorado collection (Stack's Bowers auction of August 2018, with original lot-tag #42334).
($300-$450)