Worldwide Stamps and Covers SWITZERLAND Air Post Semi-Officials
Sale No: 0523
Lot No:1238
Symbol:e
1913 (9 Mar) Basel, official card with 50c Flugspende adhesive, used in combination with 2x5c green, canceled by First Flight cds and sent to Libau, Russia, with Libawa 27.2.13 arrival (note the disparity between Julian and Gregorian calendars), v.f. and unusual flight card to Russia (Image)