Watch List notes:

Potosi, Bolivia, cob 4 reales, 1630T, rare. S-P26; KM-17a. 13.23 grams. Clear 30 of date, full shield and cross but with some flat areas, XF with patchy steel-gray toning and faint surface corrosion as from an unspecified shipwreck.
(150 - 225 USD)