1913 50 C. Airmail Herisau Niederglatt, along with 5 C. Tell boy on official card, cancelled by violet special cancel "HERISAU 30. III. 13 II. Swiss airmail", addressed to Brüggen, the admission stamp in perfect condition, additional franking scratched and card with transport traces and notch, edition approximate 6.300 piece, photo expertize from the Weid SBPV "in good condition. ", Michel 1.000.-