Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Switzerland - Zeppelin Flights - 1930 (May 18-31), South America Flight postcard, franked by Icarus a single of 75c and 1fr in block of four, tied by Romanshorn ''16.V.30'' ds, red confirmation cachet and Lakehurst green machine arrival of May 31 is on reverse, mostly VF, Sieger #57, C.v. €220 w/o premium for franking (used stamps off cover have C.v. $147), Scott #C11-12