Watch List notes:

Complete "tumbaga" gold "finger" bar, 660 grams, marked with fineness XIII (13K), foundry/assayer marks backwards S and cross-topped B, and two tax stamps showing CAR with the A above the CR for Charles I of Spain (or Charles V of the Holy Roman Empire), from an unidentified early 1500s wreck in the Caribbean. 8-1/4" x 1" x 1/4". Unusually intact bar (as these were normally cut into pieces) that probably dates to the 1520s based on its "tumbaga" content of 35% copper and 10% silver, also with backwards-S stamp (butted up to the right side of the XIII fineness) that matches specimens from the ca.-1528 "Tumbaga" Wreck, the other stamps new to us, the circular tax stamps weak but the cluster around the fineness bold and well defined by dark encrustation, a few scratches on other side but otherwise all rather smooth and attractive, with sharply cut diagonal assayer's bit in one corner. From an unidentified early 1500s wreck in the Caribbean.

Estimate: $20000 - 40000