Watch List notes:

Potosi, Bolivia, cob 2 reales, Philip III, assayer T below backwards-P mintmark (ca. 1620), quadrants of cross transposed with bottom-right lion upside-down, king's name in reverse legend (unique). S-P21; KM-8. 6.42 grams. What a crazy coin! The backwards mintmark and transposed quadrants of the cross are strange enough, but common, whereas the upside-down lion and the king's name in the reverse legend are odd even for this period and unique to this coin so far. It is also a nice specimen, with bold q-x-T, full shield and cross (the latter double-struck), VF with good toning. (Estimate: $200 - 300)