Watch List notes:

Costa Rica, 50 centavos, 1890/80GW, NGC AU 50, ex-Richard Stuart (stated on label). KM-124 (but with proper N). Choice strike, a few minor marks but no wear, muted luster, light gold tone all over with tiny brown spots, more like MS in our opinion. NGC #4425836-001. Pedigreed to the Richard Stuart collection.

Estimate: $500-750