1931-1952, collection of 51 airmail and airmail covers in an album, including some airmail registered covers and various first and special flights. ÷ 1931-1952, Sammlung von 51 Flug- und Luftpostbriefen in einem Album, darunter u.a. einige Luftpost-Einschreiben sowie diverse Erst- und Sonderflüge. (Image)

1937/1961, a decent mint collection of airmail issues, from 1937 "Roland Garros" overprint mint hinged (signed), from 1940's onwards in never hinged. (Image)