COLOMBIA. 1872-B 50 Centavos. Bogotá mint. Restrepo 306.1. AU-50 (PCGS).The first issue of this series denominated as 50 Centavos, and the scarcer year of a two-year Bogotá type (three years if one includes Restrepo 307, which is a minor variant). Abundant original luster persists across both sides, with attractive gold and blue toning strongest at the peripheries. Some light hairlines are present, more notable on the obverse, but the visual appeal is very nice for the grade. This issue is called scarce by Restrepo.