Watch List notes:

Mexico City, Mexico, 4 reales, Charles-Joanna, "Early Series," assayer P over erased R (Latin) at bottom between pillars, motto dot-PLVS-dot in rhomboid panel, NGC XF 45. Nesmith-6 for type under Assayer R; CT-70 type; S-M4. Unique variety of shield/pillars combination with a rhomboid panel containing dots in two corners minted under Assayer P using carryover of dies from Assayer R (of which several are known), a key piece for any serious Charles-Joanna collector, particularly those who appreciate the few coins that show the transition from one assayer to the next (something that was unknown to Nesmith). A fine example with readable legends and interiors, darkly toned. NGC #3703895-007.

Estimate: $6000-9000