Watch List notes:

Bogota, Colombia, cob 2 escudos, Philip V, assayer not visible (ca. 1720), with mercury on surfaces as from the Guadalupe-Tolosa (1724). S-B24a; KM-17.2. 6.67 grams. Fascinating coin that at first looks polished from jewelry or perhaps even gold-plated silver, but closer scrutiny reveals that the surfaces are impregnated with mercury (which dissolves gold), for which the source wrecks were known, the coin itself otherwise fairly normal, with full shield and full but doubled cross, AXF for actual wear, pedigreed to the original Goldberg auction in which the only known coins from these wrecks were sold (and at the time they were encapsulated by NGC). From the Guadalupe-Tolosa (1724), with Sedwick photo-certificate.

Estimate: $1750 - 2500