Watch List notes:

Potosi, Bolivia, cob 2 reales, Philip IV, assayer TR/?, upper half of shield transposed (early 1640s), rare, ex-Mastalir. S-P27; KM-14a. 6.79 grams. About VF with some flatness, interesting assayer TR over another unidentified assayer (looks like PAL/M, which would be 1618/7, but later in style, particularly with small denomination z), toned fields, old scratches on reverse. Pedigreed to the Robert Mastalir collection.
($125-200)