cover Germany, 1924-31, Zeppelin Flight Covers, five different flight covers, incl. nos. C35, C36 (on separate covers, Sieger #122Aa), C26 (c.v. $120.00 on ZR3 cacheted flight cover, Sieger #20a), another similar flight cover franked with nos. C20 two, C21 two and C22, fine-very fine lot, Scott retail $217.50+, Sieger DM 590.00