French Colonies. (Gabon). 1937. Air Mail envelope addressed to Gabon bearing France Yvert 246, 1f orange-red and Yvert 289, 1f 75 lilac (pair) tied by Orleans Quatier/ Loiret date stamp '15th Mai 37', endorsed 'via Toulouse - Dakar/ 1st Service Cotonou - Pointe-Noire' with framed 'Service Aerien Senegal - Congo/ 1st Voyage Mai 1937/ En Liaison Avec Air France - Air Afrique' in violet on face, underpaid with 'T/ 4.00' hand-stamp and bearing French Gabon postage dues Yvert 2, 10c brown, Yvert 6, 45c green (pair) and Yvert 11, 3f violet tied by Port Gentil/ Gabon receiver '20 Mai 37' on face.
Very rare Gabon A.E.F. postage dues on cover.