Watch List notes:

Gold disk ingot, 1340.88 grams, tested at 0.926 fine gold (22.224K), marked with script P, ex-Luz (1752), ex-Sotheby's. 3-1/4" in diameter and up to 3/4" thick. A thick, heavy and very neatly cast disk with rounded bottom and flat top (all hammered smooth in its time) showing small barnacle "footprints" over the bright yellow gold, the surface bearing just one marking, an elegant script P, notably without any evidence of taxation via stamp or cutting, hence most likely contraband and/or possibly connected to the Jesuit missions (which were exempt from taxation), but with one small area of filing on the edge where the metal was tested contemporaneously. From the Luz (1752), pedigreed to Sotheby's Uruguayan Treasure of the River Plate auction of March 1993, with original lot-tag 764 and Sotheby's catalog.

Estimate: $70000 - $100000