Watch List notes:

Lot of two San Jose, Costa Rica, Banco Central, 10 colones proofs, ND (1969-70). SCWPM-230pp, 230p. 10 colones progressive proof, two POCs, encapsulated PMG Gem UNC 66 EPQ, PMG #8037010-025; 10 colones proof, two POCs, encapsulated PMG Superb Gem UNC 68 EPQ, finest and only example in PMG census, PMG #8037010-026. Both high grade proofs mounted on cardstock with printer's marks and annotations (as made), great color and original paper quality.
($300-450)