Watch List notes:

Silver "plata corriente" cut piece of an ingot, 11.81 grams, marked with Philip II tax stamp Approx. 1-1/4" x 1/2" x 3/16". Thin edge piece broken from a "splash" ingot, with bold tax stamp showing (HIS)PANI(ARVM), much contrasting encrustation and noticeably circulated, unlike shipwreck ingots. From a Spanish colonial site in the southern Caribbean

Estimate: $350