COLOMBIA. Banco de la República de Colombia. 100 Pesos Oro. July 20, 1923. P-366s. Specimen.Another significant, higher denomination Specimen from the 1923 Kammerer series. Issued notes are very rare (there were only 30,000 issued notes printed). There were only two face and back proof pairs from the 1990 ABN sale sold in the first Eldorado sale, with one of those pairs bringing $2,280. Zero numbers and SPECIMEN in red. The handling is light and requires close observation to detect. This Specimen is important and a key opportunity.