Zumstein VI, 1913 Langnau, just tied on postcard with "Fur die Militar Aviatik/ Officiele Karte" and logo showing image of "Furs Vaterland" by "Erste Flugpost Lanhnau I.E. Bern 4.V.13" cancels which also ties 5 Tell issue, flight stamp rough perfs, card with corner bend lower right, still fine and scarce (Zum CHF1,300)