Specimen 30pa., 2pi., 9pi., 12pi. and 45pi., each overprinted "SPECIMEN" and with portion of double ring "COLONIE DE GABON ET DU CONGO FRANCAIS" cachet in black; minor imperfections but good to fine.

细节
Specimen 30pa., 2pi., 9pi., 12pi. and 45pi., each overprinted "SPECIMEN" and with portion of double ring "COLONIE DE GABON ET DU CONGO FRANCAIS" cachet in black; minor imperfections but good to fine.