BOLIVIA, Potosí, cob 2 reales, 1726 Y, Louis I, PCGS F15, ex-August.

Capitana Shipwreck (1654) Potosí, Bolivia Cob 8 Reales (1649) Z w/ Crown C/M

Sedwick's Practical Book of Cobs Spanish Colonial Coins & Shipwreck Reference

SPAIN, PORTUGAL AND THE NEW WORLD, by Krause-Mishler (2002) Coin Reference Book

Colonial Potosi, Bolivia shield 1/4 real silver cob, Philip II, assayer B #6022

Joanna Shipwreck (1682) MEXICO Mexico City Silver Cob 8 Reales Charles II

Dodington Shipwreck (1755) BOLIVIA Potosí Silver Cob 8 Reales Ferdinand VI & COA

MEXICO Mexico City Silver Cob ½ Real 1733 (F) Rare Fully Dated Sedwick-M26

SS Republic Shipwreck 1858-O Silver Half Dollar NGC AU 53 - Rare Straight Grade

BOLIVIA Potosí Silver Cob 1 Real 1641 (FR) Very Rare Sedwick-P28

COLOMBIA, Santa Marta, copper ¼ real, Ferdinand VII, 1820.

The Great Transition at the Potosi 1649-1653: The 1649-1652 by Mastalir Vol 3-4.

Akerendam Shipwreck (1725) NETHERLANDS, Westfriesland, "rider" ducatoon, 1672.