Watch List notes:

Tiny gold "oro corriente" cut piece of a small ingot with partial tax stamp for Charles I of Spain, 2.93 grams. About 3/8" x 1/4" x 1/8". Very small and curious piece with four sides chiseled and cut (one side crude but the others neat), showing just a part of one circular stamp, approximately the equivalent of a 1 escudo in its time.

Estimate: $400 - 600