Watch List notes:

Medium-sized "tumbaga" silver bar #M-89, 4250 grams, stamped with assayer BRAo, serial number RC and fineness iU9XX (1520/2400 fine), plus partial tax stamp, from the "Tumbaga wreck" (ca. 1528). 13-1/4" x 3-3/4" x 3/4". Flat and neatly rectangular with markings on smoother bottom side, which also features an odd C-shaped raised area (perhaps the outline of an original artifact), the top side mostly irregular and with copper spots here and there, also with fairly large, diagonal assayer's "bite" in one corner and smaller, circular "bite" in opposite corner, nicely toned all over. From the "Tumbaga wreck" (ca. 1528). (Estimate: $5000 - 7500)