COLOMBIA. Lot of (2) Banco Industrial. 1 Peso, 1919. P-S551s & S551pp1. Specimen & Front Progressive Proof. PMG Choice About Uncirculated 58 & Choice Uncirculated 64. 2 pieces in lot. Included are P-551s Specimen and P-551pp1 Face Proof. The specimen is printed in dark green ink with bold red specimen overprints and serial numbers, and is found with three hole punch cancellations. The Proof is found printed on bright paper with dark ink.