Watch List notes:

Mexico City, Mexico, cob 1 real, 1620/19D, retrograde 2, very rare. S-M18; KM-unl; CT-unl. 3.30 grams. Bold full date with clear 20/19 (first example we've seen), the 2 being a backwards z, also full oMD, full cross and most of shield despite poor centering. ($500-750)