cover Zeppelin flight covers, 1928-36, eleven covers and four cards representing eight different flights, most franked with German stamps, covers incl. three franked by US no. C18, Sieger nos. 21B (2), 26B, postcards incl. Sieger nos. 26A, 26B, 30Ac (2), also incl. four catapult covers, few with small faults, fine-very fine