Watch List notes:

SPANISH COLONIAL, Mexico. Carlos & Joanna. 1542-1555. AR 4 Reales (13.40 gm; 33 mm). A-M (Alonso Villaseca), Rare Assayer. NGC-AU 55. Cayon 3097. Lovely strike on a nice broad flan. Perfectly centered. Choice AU. Nice old cabinet toning.