Watch List notes:

Santander (Bucaramanga), brass uniface 10 centavos (necessity coinage), (1902). Restrepo-375.1; KM-A1. 0.46 gram. Interesting wartime issue made from spent rifle casings found on the battlefield, bold AU with small dark spots against dull brass color, small arc-shaped void in edge (as made?), scarce denomination struck without date (unlike the larger 20c and 50c).
($80-$120)