Philately. ITALIAN LIBYA / French Occupation / FEZZAN / letter to Kamerun, franked with overprint airmail (!) Sass.3 and postage stamp Sass.12, CDS POSTE MILITARE 1.9.43; very fine,, exp. and certificate Enzo Diena, cat. only as used stamps 5.250EUR (Image 1)(Image 2)(Image 3)