AUSTRIA - Switzerland, 1933 (July 3), registered air mail cover, franked with WIPA souvenir sheet in combination with WI, all tied by philatelic exhibition KUNSTLERHAUS-WIEN boxed datestamp. Front bears exhibition registration label and WIPA WIEN/FLUGPOST c.d.s. Alongside "ZURICH FLUGPLATZ" transit and "LAUSANNE/POSTE AERIENNE" arrival c.d.s. Obverse arrival Lausanne c.d.s. Very rare on commercially used covers with all relevant transit marks. Michel €8 000 (9 740 CHF).
Est. 1 500 - 2 000 CHF
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