Watch List notes:

Mexico City, Mexico, 1 real, Charles-Joanna, "Late Series," assayer G to right, mintmark M to left, ex-Mark Bir. 3.23 grams. Very broad, thin flan with choice details in VF+ grade, lovely rainbow toning all over. Pedigreed to the Mark Bir collection, with his tag, and our Auction #7, with original lot-tag #729.

Estimate: $200 - 300