This Special AIR stamp celebrated the La Chaux-de-Fonds, St. gallen Lugano flights.
Designed by H. erni and engraved by A. Yersin
Design recess. Background typo.
Printed by PTT, Berne
This stamp was only valid for postage on the special postal flights of April 27 and 28, 1949
Released April 11, 1949
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