1790 cover from Warszawa, sent via Grodno and Nowogrodek to Sluck, with unframed "W" and crown departure handstamp at bottom right, way-book entry markings, fine early letter from Warszawa, with mostly intact wax seal on back (Image)

Est.US$500

1839 outer FL addressed to Warszawa, with red Lublin 12/2 at upper right, also straight line BELZYCE, fine (Image)

Est.US$150

1840 outer FL with bold "Koniecpol" straight line hs, sent to Kielce, v.f., signed Mazepa (Image)

Est.US$150

1840 outer FL with boxed bilingual "Brzesc-Kujawski" hs in red, addressed to Wloclawek, v.f. (Image)

Est.US$150

1860 10k blue & rose, canceled "1" on outer FL from Warszawa to St. Petersburg, red "19/1" departure pmk alongside, fresh and v.f. Gunzburg cover (Cat No. 1) (Image)

Est.US$1,000

1860 10k blue & rose, canceled "253" on outer FL from Plock to Warszawa, with bilingual departure 22/1 alongside, red arrival, also on back "23/1" Warszawa, fine cover from Plock, ex-Rachmanow (Cat No. 1) (Image)

Est.US$1,500

1860 10k light blue & rose, tied by "DP" in concentric rings on outer FL from Warszawa, used in 1864 to Bialystok, with red "Ekspedycya Poczt Dworzec Praga 17/8" departure pmk alongside, arrival docketing, fresh and fine cover (Cat No. 1) (Image)

Est.US$1,500

1918 "Krolewstwo Polskie" (Kingdom of Poland), unadopted designs, two composite sheetlets of four and six, also a single 1m, all in black, v.f. and rare (Image)

Est.US$500

1919 10kr violet, Plate IVB, position 1, showing the constant variety part of the middle ornament incomplete (this variety occurs only in position 1 of the plate of 25), l.h., perfectly centered and fresh, signed Filatelia Krakow, Marbach, etc., with 1995 and 2013 Stefan Petriuk certificates. A splendid example of this popular stamp, undoubtedly one of the finest in existence (Mi.47a) cat. $14000 (Cat No. 55) (Image)

Cat. $14000, Est.US$10,000

1925 5gr green and 10gr violet, vertical imperforate se-tenant gutter pair, folded between stamps, unused without gum, signed Laszkiewicz, with some violet ink at top, v.f. (Cat No. 230-31var) (Image)

Est.US$500

1937 2,20zl "Znaczki Pocztowe", six unexploded booklets, stamps with occasional offsets from being lightly stuck down, fine-v.f. (Image)

Est.US$500

1958 15th Anniversary of the Polish People's Army, compound art work showing all three designs and issued colors corrected by hand, signed by the artist, with official Conservatory hs on reverse, v.f. and unique (Cat No. 823-25P) (Image)

Est.US$750

1959 Red Cross, compound art work showing all three designs and issued colors corrected by hand, signed by the artist, with official Conservatory hs on reverse, v.f. and unique (Cat No. 868-70P) (Image)

Est.US$750

1925 (12 Mar) flown card from Warszawa to Gdansk, franked with L.O.P.P. 10gr and 50gr, with 30gr government franking alongside, tied by cds, with framed "Samolotem" and "Pobrano/Percu Gr.5" charged on arrival, fine (Image)

Est.US$150

1925 (1 July) flown card from Warszawa to Gdansk, franked with L.O.P.P. 50gr and 1zl, supplemented by a 30gr government franking alongside, tied by Warszawa cds, with red "Mit Luftpost befordert flugpostampt Danzig 5." hs on back (Image)

Est.US$250

1926 (1 Apr) Warszawa to Prag, first flight cover franked on both sides with government franking paying total of 68gr, with "L'Inauguration du Service Aerien International 1.VI.1926" and boxed "24gr" due markings, arrival pmk on back, fine (Image)

Est.US$150

1926 (9 Nov) Warszawa to Krakow, flown cover franked with L.O.P.P. 1zl surcharge, with 30gr government franking alongside, tied by Warszawa Port Lotniczy cds, with red "Nadeszlo Poczta Lotnicza" and other markings (Image)

Est.US$250

1928 (19 Sep) Warszawa to Lwow, flown cover franked with L.O.P.P. 50gr, with 10gr government franking alongside, tied by Warszawa Port Lotniczy (19 Sep) cds, with red "Nadeszlo Poczta Lotnicza" and violet "20gr" due marking, arrival pmk on back (Image)

Est.US$150

1946 International Bureau of Education, souvenir sheet of three, n.h., v.f., cat. $425 (Cat No. B49c) (Image)

Cat. $425, Est.US$100

1946 Etlingen, 1m violet & red, center (Polish Eagle) inverted, unused without gum as issued, n.h., v.f., signed Z.Korszen, with a normal stamp on card (Cat No. Fischer 8t) (Image)

Est.US$400

1944 Olympics set of three, n.h., also souvenir sheet (used), v.f., signed Schmutz, etc. (Image)

Est.US$500

1946 Polish 2nd Corps Issue, souvenir sheet of four, also National Anthem souvenir sheets (3), n.h., fine-v.f. (Sass. Block 1-4) cat. €800 (Image)

Cat. €800, Est.US$250

1946 Polish 2nd Corps souvenir sheet, without cancelation, uncut horizontal pair, without gum as issued, v.f., with 2017 Sebastiano Cilio certificate (Sass.1A) cat. €6500 (Image)

Cat. €6500, Est.US$1,500

1946 Polish 2nd Corps souvenir sheet, with 45gr green omitted, without gum as issued, v.f., with 2016 Cilio certificate, unique! (Sass.1Aca) cat. €14000 (Image)

Cat. €14000, Est.US$5,000

1946 National Anthem souv. sheets, set of three, n.h., v.f., cat. €600 (Cat No. Sass. Block 2-4) (Image)

Cat. €600, Est.US$150