Watch List notes:

Mexico City, Mexico, 4 reales, Charles-Joanna, "Early Series," assayer F/P to right, mintmark M to left, rare, NGC AU 53, ex-Rudman (stated on label). Nesmith-16 (not listed as an overassayer); CT-Type 73; S-M3. 13.5 grams. Not listed as F/P in NGC, but clearly so, an exceedingly beautiful example from a very rare assayer, only four known in the overassayer variety and less than a dozen known in all. NGC #2789249-014. Pedigreed to the Isaac Rudman collection.
($6000-9000)