Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Turkey - Zeppelin Flight - 1933 (May 6-9), 1st SAF stationery postcard 6g red from Istanbul to Buenos Aires, uprated by four values, tied by ''1.5.33'' ds, Berlin ''3.5.33'' transit, red Berlin-Friedrichshafen connection and blue flight markings, arrival hs on reverse, VF and scarce, Sieger #202, C.v. €350, Est. $300-$350, Scott #696, 753‑54