50p black 'Timbre Nacional' REVENUE issue with '1923' overprint, a fine block of four each stamp overprinted 'SPECIMEN' in red and with small hole punch. Ex ABNCo. Archive. (Ross #Unlisted)
50p black 'Timbre Nacional' REVENUE issue with '1923' overprint, a fine block of four each stamp overprinted 'SPECIMEN' in red and with small hole punch. Ex ABNCo. Archive. (Ross #Unlisted)