^Lot 237 MEXICO, Mexico City, clump of one cob 8 reales "biscuit" in chunk of coral, Philip IV, assayer not v

MEXICO, Mexico City, clump of one cob 8 reales "biscuit" in chunk of coral, Philip IV, assayer not visible. KM-45; Cal-Type 319. 153.73 grams total. Roughly 3" x 2" x 2". Heavily encrusted biscuit with thick, rusty surfaces derived from a corroded iron chunk save for a portion along the edge showing just a bit of the coin, all sticking out of a large chunk of white coral. With original certificate from Captain Tracy Bowden through his contract with the Dominican Republic. Recovered from: Concepción, sunk in 1641 off Hispaniola