S23729

south america flight 1932 - registered letter with high valuable Switzerland mixed franking, cancelled Zurich-Fraumunster 23.IX.32 sent via Friedrichshafen and carried by airship on it' s seventh south america flight via Recife (arrival postmark) to Blumenau (arrival postmark), good needs quality, Sieger 183 a CH, Michel Zeppelin specialized catalogue 279 a CH