Watch List notes:

Lot of eight Mexico City, Mexico, cob 4 reales, Philip III, assayer F (where visible). 49.10 grams total. All thin from heavy corrosion (one fragmentary), a couple with brown encrustation, generally clear shields and crosses. Pedigreed to the Dave Horner collection (Sedwick Auction 20, with original lot-tag 1752). From: San Martin, sunk in 1618 off the east coast of Florida
($350-500)