1925-30, Pilot, Crane and Airplane, 2g-10s, complete set of 20, full OG, NH, mostly VF, C.v. $325, ANK #468-87, €450 (Image)

1935, Airplanes over Landscapes, 5g-10s, complete set of 15, full OG, NH, VF, C.v. $150, ANK #598-612, €240 (Image)

1951, Women Regional Costumes, Lower Austria, perforated proof of 3.50s in dark green (issued color), perforation L14½-15 instead of comb 14¼ x 13½, nicely centered, full OG, NH, VF, ANK #919P, €575, Est. $200-$240 (Image)

Military Stamps. COLLECTION ON HINGELESS PAGES: 1915-19, black overprints ''K.U.K. FELDPOST'' on stamps of Bosnia, Emperor Franz Josef issue, two sets of Emperor Karl I (missing No.M77), semi-postal and newspaper stamps, all with full OG, some NH, mainly LH, F/VF, C.v. is over $600, Est. $300-$400 (Image)

Prisoner's of War Unissued Designs by L. Hesshaime. 1918, 6 die proofs of various designs in different colors, 2k-50k, housed in buff cover booklet with black text, each proof and cover signed by the artist at bottom, fresh, VF and rare, Est. $250-$300 (Image)