Watch List notes:

Mexico City, Mexico, cob 4 reales, 1620D, rare, ex-Spink. S-M18; KM-37.2; CT-237. 10.10 grams, the box 3-1/4" x 2-1/2". Round flan with bold full cross and shield despite pitting, also bold full oMD and date (last digit weak), darkly toned all over. With original Spink box and small certificate. "Lucayan Beach wreck," sunk ca. 1628 off Grand Bahama Island

Estimate: $250-375