Watch List notes:

Mexico City, Mexico, cob 1/2 real, (172)4(D), Louis I, rare. S-M23; KM-25; CT-57. 1.36 grams. L of king's name in legend, especially rare with (bottom of) last digit of date also visible, rest of coin mostly flat but no worse than AVF for actual wear, nicely toned.

Estimate: $200-300