COSTA RICA. Banco Internacional de Costa Rica. 100 Colones, ND (1919-32). P-178s. Specimen. PMG Gem Uncirculated 66 EPQ. Printed by ABNC. Red specimen overprint with solid zero serial numbers and dual punch cancellations. Allegorical woman at left with ornate counter at center. The reverse showcases intricate lathe work in dark gray/black ink.