S28559

Mannheim-Heidelberg-Mannheim airmail 1912 - official airmail postcards carried by airmail Mannheim-Heidelberg and the other one on the flight back from Heidelberg to Mannheim 19.5.12, both ppc with card text and in very good needs quality, as full issue a very rare offer, Michel airmail specialized cataloge PF 9-01 and PF 9-02