Watch List notes:

Potosi, Bolivia, cob 4 reales Royal, 1709Y, very rare, KM Plate Coin. S-P43a; KM-R30 (this coin); CT-unl (180 for Type). 13.45 grams. Bold full pillars-and-waves, full but double-struck cross, practically no legend, all three dates and mintmarks and assayers, deeply toned (and lightly encrusted) fields for good contrast, holed at top of cross, VF, first example we have handled. Plate Coin in Krause-Mishler's Spain, Portugal and the New World (2002), page 56.

Estimate: $2500-3750