FRENCH GUIANA. Caisse Centrale de la France dOutre-Mer. 5000 Francs, ND (1947-49). P-26s. Specimen. PMG Gem Uncirculated 66 EPQ.Specimen. Overprint on French Equatorial Africa Pick 27. A gem specimen for this high denomination with black overprints and a SPECIMEN perforation at left.PMG Gem Uncirculated 66 EPQ.