Watch List notes:

Granada, Spain, 1 real, Ferdinand-Isabel, assayer o flanking shield, mintmark Gothic G on reverse. CT-316. 3.34 grams. Superb centering on broad flan, well-toned AU- with distinctive Mexico City-style X (only found on coins from the Granada and Burgos mints), Gothic lettering and complete legends on both sides.

Estimate: $600-900