AIR MAIL and ZEPPELIN Switzerland

Quality: ✉

9.5.1940 Special Postal Flights for the benefit of the Red Cross lot of 3 covers sent from Samedan and Bellinzona respectively to Assen, Netherlands, and Basel, Switzerland respectively, each franked with, amongst others, PRO PATRIA stamps of the 1940 issue, one of the covers to Assen with German censorship, vf/f