S23731

Rome flight to Barcelona 1933 - tuberculosis-fund ppc with high valuable Switzerland airmail stamp mixed franking, cancelled Zurich 26.V.33 and carried by airship on it' s Rome flight, forwarded with airship on the second south america flight dropped at Barcelona (arrival postmark), a very rare offer in very good quality and with certificate by Böhler, SBPV, Sieger 208 CH, Michel Zeppelin specialized catalogue 304 A b CH