Watch List notes:

Large silver ingot #763 made in Potosi, 75 lb 3.04 oz troy, Class Factor 1.0, marked with fineness IIUCCCLXXX (2380/2400, 99.17% fine), date 1622, manifest number IUCL (1150), assayer MEXIA, tax stamps and owner/shipper marks, ex-Atocha (1622). 13-1/2" x 5" x 3-1/2". Slightly smaller bar with particularly strong date cartouche (full 1622), clear diamond-topped AR monogram for owner/shipper Arriola but also a clear AV monogram near the other end, shallower-than-usual assayer's "bite" (because it's a smaller bar) in center, at least one clear tax stamp, the fineness weaker but still clear, probably V for silvermaster de Vreder in one corner but all somewhat corroded all over. From the Atocha (1622), with original Mel Fisher photo-certificate 85A-S763.
($25000-37500)