Watch List notes:

Cuba, 50 centavos, double short-and-thick key countermarks (1872-77) on a USA (San Francisco mint) seated Liberty half dollar 1856-S, rare. KM-R5.3. 11.33 grams. Extremely rare with two countermarks, one on each side, both VF and nearly full, on an About Good seated Liberty half dollar (far scarcer than Mexican coinage with the same countermarks) with worn rims but visible date and mintmark. ($400-600)