Costa Rica, Banco Internacional de Costa Rica, Caja de Conversion issue of 1924-29, face and back Proofs of 2 and 5 Colones (Pick 184, 185), also face Proofs only of 10 and 20 Colones (Pick 186, 187), all flawless, the 10 Colones with wide margin(6)

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Costa Rica, Banco Internacional de Costa Rica, Caja de Conversion issue of 1924-29, face and back Proofs of 2 and 5 Colones (Pick 184, 185), also face Proofs only of 10 and 20 Colones (Pick 186, 187), all flawless, the 10 Colones with wide margin(6)