Watch List notes:

Mexico City, Mexico, cob 8 reales, (1)640/39P. S-M19; KM-45; CT-335. 25.36 grams. Thick and solid (minimal corrosion) but crudely struck, the oMP and most of the date clear, full but weak shield and cross, deeply toned all over. Concepcion, sunk in 1641 off Hispaniola

Estimate: $200-300