Watch List notes:

WORLD COINS, MEXICO, Carlos & Joanna, (1516-1556). Silver 4 Reales, undated M-A (Mexcio City). 13.5 g. Late Coinage (1542-1555). Crowned arms of Castille and Leon. Rev. Crowned pillars over waves, motto between and value below. (KM 0018). Sharply struck with medium gray tone. NGC graded MS-61.

Estimate: $ 1,200