Watch List notes:

Granada, Spain, 1 real, Ferdinand-Isabel, assayer three-quarters Maltese cross flanking shield, mintmark Gothic G on reverse. CT-318. 2.97 grams. All Gothic lettering with distinctive Mexico City-style X (only found on coins from Granada and Burgos mints), non-toned AU- with full details, minimal doubling, unusually broad flan that is inexplicably underweight.

Estimate: $150-225