Two FDCs, one with a catchet honoring the 11-cent Air Mail Stamp, the other honoring the Wright Brothers and the 9-cent Air Mail Stamp, each signed in blue ballpoint and black felt tip by six crew members, including Fred Grozinger, Georg Holl, Eugen Bentele, August Deutschle, Josef Sonntag, and one other. In fine condition, with some trivial rubbing to one of the covers. RRAuction COA.
