Liechtenstein, Airmail, 1931, 2fr Zeppelin. Tied by red cachet handstamp on 1931 Liechtenstein Graf Zeppelin flight cover to Lausanne, Switzerland, additionally franked with complete set of Finland 1931 Red Cross semi-postal issue tied by Helsinki origin cds's, Vaduz transit and receiving cds's, Very Fine, an extremely rare usage originating from Finland, with only two usages recorded; with 1995 Dr. J. Simon certificate. Scott No. C8  Estimate $1,500 - 2,000. $0 (Image)