Bogota, Colombia, cob 1/2 real, 1651, very rare (unlisted), NGC VF 30, finest and only example in NGC census. Restrepo-M16.6; S-B6; KM-unl (8 for type); Cal-unl (Type 177). 2.04 grams. Choice example with full and well-centered monogram and cross-lions-castles (proper quadrants), also with full crown above the monogram and 1651 date in cross-side legend (not listed in Restrepo), contrastingly toned, a very detailed and instructive coin for the advanced researcher.
Estimate: 500 - 750 USD