1912, LZ 11 Viktoria Louisa, only on board confirmation mark, picture postcard \"Landing\" with 5 Pfg Germania from single circle postmark \"K. B. Railway mail / WRZB. 10 MAR 12\" to Frankfurt with appropriate Cachet from \"10. MRZ. 1912\", faultless condition, rare, detailed photo expertize Dr. Simon BPP, Si. 500.-