Watch List notes:

Mexico City, Mexico, cob 1/2 real, 1610/09 F/A, rare, mounted cross-side out in twisted-wire 14K gold bezel with shackle bail. 4.76 grams total. Broad flan with good full cross-lions-castles and monogram with bold oM to left and F to right (the over-assayer actually more like F/L but can only be F/A), also with bottoms of 10/09 of date at edge in addition to clear king's ordinal III, nicely toned XF with hint of surface porosity, mounted with cross rotated 90 degrees counterclockwise.
($200-300)