^Lot 1840 Mexico City, Mexico, 4 reales, Charles-Joanna, "Late Series," assayer O to right, mintmark oM to lef

Mexico City, Mexico, 4 reales, Charles-Joanna, "Late Series," assayer O to right, mintmark oM to left (oM-O), mounted pillars-side out in fancy 18K gold pendant with jump-ring and white-gold-plated skull and flourish accents. 16.88 grams total. Deeply toned AXF with bold full shield and pillars, small thick flan, thick mount with ornate engraving around the outside.