Air Post stamps. 1922, black surcharge 20c on Air Squadron 2auk brown and blue, horizontal pair, left stamp without ''CENT'' in surcharge, full OG, previously hinged, VF, expertized by H. Bloch, APEX and Friedl Committee certificates, C.v. $200, Est. $120-$150 (Image)

Air Post stamps. 1926, Swallow, 60c blue and black, center is inverted, nicely centered and very fresh, full OG, LH, VF, K. Lissiuk guarantee, APEX certificate, C.v. $250, Est. $150-$200 (Image)

Air Post stamps. 1935, Felix Vaitkus Trans-Atlantic Flight, black diagonal overprint on airplane ''Lithuanica'' 40c dark rose and blue, full OG, previously hinged, VF, expertized by H. Bloch and others, APEX certificate, C.v. $400, Est. $150-$200 (Image)