COLOMBIA. Banco de la Republica. 10 Pesos Oro. January 1, 1953, January 1, 1958, January 2, 1961. P-400s1. Specimens.3 pieces in lot. A Choice trio of bond paper Specimen notes from the first three dates. Series N. Deep blue face, slightly lighter on the back. Narino at the left with adjacent Mercury. Bank on back. Each with red 00000000 serial numbers, SPECIMEN on face, and the oval TDL stamp on two corners. The 1953 and 1961 are noted as previously mounted.PMG Choice Uncirculated 64.From the Eldorado Collection of Colombian Paper Money.