Watch List notes:

Mexico City, Mexico, 1 real, Charles-Joanna, "Late Series," assayer A to right, mintmark M to left, NGC MS 63, ex-Rudman. Nesmith-56 type; CT-136; S-M6. One of the best you'll see from this denomination and assayer, typically more rare than larger denominations. NGC #4173198-011. Pedigreed to the Isaac Rudman collection.
($400-600)