S23735

south america flight 1933 - letter with high valuable Switzerland airmail stamps multi franking in a spectacular blk. of 4 stamps, cancelled Romanshorn 30.IX.33 sent via Friedrichshafen and carried by airship on it' s eight south america flight 1933 to Pernambuco (arrival postmark), very good quality, Sieger 235 Aa CH, Michel Zeppelin specialized catalogue 343 a CH