245500 | Europe ➝ Switzerland ➝ Swiss Federal Post ➝ Switzerland - semi-offical airmail
2 Items
Opening: 60 €
ZÜRICH-WIEN-CONSTANTINOPLE 30.IV.25 CIDNA first flight, transit WIEN 1.V.25 and on reverse arrival mark Istanbul Arrivee 5.5.25, fine
Provenance
Provenienz: Bill Robertson (Corinphila, 2014)
2 Items
Opening: 60 €
ZÜRICH-WIEN-CONSTANTINOPLE-ANGORA 30.IV.25 CIDNA first flight, transit WIEN 1.V.25 and on reverse transit Istanbul 5.5.25 and Angora arrival mark 7.5.25, fine
Provenance
Provenienz: Bill Robertson (Corinphila, 2014)