1860 10k blue & rose, h.r., incredibly fresh example, beautiful colors, good perforations, fine and rare, cat. $2400 (Cat No. 1) (Image)

Cat. $2400, Est.US$1,000

1860 10k blue & carmine, well centered, canceled "16" (Ruda Guzowska) in concentric rings, repaired, fine appearance (Cat No. 1) (Image)

Est.US$150

1860 10k blue & rose, nice colors and fresh, left frame completely deformed, canceled "1" in concentric rings (Warszawa), fine stamp, signed Wiatrowski (Fi.1a) (Cat No. 1) (Image)

Est.US$500

1860 10k blue & rose, canceled "188" in concentric rings (Rawa), also two 10k Russian stamps, perf. 12 1/2 (unwatermarked) with similar cancels, small thins, fine appearance (Cat No. 1) (Image)

Est.US$500

1860 10k blue & rose lilac, two defective examples, canceled "1" (Warszawa) and "81" (Chelm) in concentric rings, fine appearance (Cat No. 1) (Image)

Est.US$150

1866 Russian 10k brown & blue (horizontally laid paper), canceled "189" in concentric rings, with bilingual "Gorzkowice" departure (date filled-in by hand) at top, merchant's oval "Niechcice" and sent to Warszawa, filing crease through the stamp, fine appearance, with arrival pmk on back (Image)

Est.US$150

1919 Krakow Issue, 10h magenta, well centered, hinge removed, v.f., signed Bloch and Dr.Kronenberg, cat. $500 (Cat No. 44) (Image)

Cat. $500, Est.US$150

1924 Arms of Poland, 1gr orange brown and 3gr orange, imperforate vertical gutter se-tenant pair, unused without gum, each stamp with invalidating printer's lines in red, folded between stamps, signed Gryzewski (Cat No. 215,217P) (Image)

Est.US$1,000

1941 London Issue, 5gr lilac, imperforate horizontal pair, also 1zl brown, imperf. single, all used, v.f. (Fi.A338P,N338P) (Image)

Est.US$300

1941 London Issue, 80gr carmine, large die proof on wove paper, minor toning, otherwise fine (Fi.338P) (Image)

Est.US$150

1956 Olympic Games Melbourne, 20g light brown & dull violet (Boxer), center inverted, lower left sheet corner margin single, n.h., v.f., unique positional piece and truly superb modern rarity from Poland, only 14(!) examples are known to exist, cat. $17500 (Cat No. 751a) (Image)

Cat. $17500, Est.US$20,000

1961 P.K.O. 60k black & brown, bottom sheet margin pane of 16, eight stamps imperf. at bottom, n.h., folded between stamps, v.f., scarce (Cat No. 1-15var) (Image)

Est.US$500

1946 10zl brown violet, imperforate horizontal pair, handstamped "Groszy" and used in 1951 on registered cover, with additional franking from Katowice to USA, 3x40gr Bierut adhesives (two on back) invalidated by pen cross, fine-v.f., with arrival pmks (Cat No. C14var) (Image)

Est.US$150

1948 Roosevelt, Pulaski and Kosciuszko, set of three sheetlets of 16, handstamped "Groszy" in red on each stamp, double on 100gr, n.h., some corner creases, stamps fine-v.f., one signed Gryzewski (Cat No. C26A-C) (Image)

Est.US$500

1948 Roosevelt, etc., set of three, each handstamped "Groszy", used on registered cover from Gliwice to USA, various transit and arrival pmks, fine (Cat No. C26A-C) (Image)

Est.US$100

1948 Roosevelt, etc., three different sets of horizontal gutter pairs, used on three registered FDCs to USA, some cover faults, stamps fine-v.f. (Cat No. C26A-C) (Image)

Est.US$150

1948 Roosevelt, etc., souvenir sheet of three, handstamped "Groszy" in red on 80gr and 1.20zl only, n.h., v.f., also another sheet handstamped "Groszy" in black, double on 1.20zl, disturbed gum, signed Gryzewski (Cat No. C26Cd) (Image)

Est.US$150

1948 Roosevelt, etc., souvenir sheet of three, used on registered and flown FDC from Warszawa to New York, cover faults, otherwise fine-v.f., with arrival pmk (Cat No. C26Cd) (Image)

Est.US$150

1957 1.50zl imperforate single, proof with blue background shifted, n.h., v.f. (Fi.891P) (Cat No. C42P) (Image)

Est.US$150

1946 B.I.E. souvenir sheet, n.h., v.f. (Cat No. B49c) (Image)

Est.US$150

1916 registered cover (with letter) from the United States to the Polish Legion (K.u.K. Feldpost, 1 Pulk Ulanow, Legionista Polski), with French military censor markings and "Controle Postal Militaire" label, fine and unusual (Image)

Est.US$150

1946 2zl black brown, imperforate sheet of 50, unused without gum as issued, folded between stamps, v.f., pencil signed Raybaudi, with his 2011 certificate, cat. €25000 (Cat No. Sass.16A) (Image)

Cat. €25000, Est.US$2,500

1946 2zl black brown, imperforate vertical gutter block of eight (two vertical gutter pairs), unused without gum as issued, folded between stamps, v.f., pencil signed, apparently the only recorded! cat. €14000 (Cat No. Sass.16Ac) (Image)

Cat. €14000, Est.US$2,500

1946 2zl brown violet (General Anders), imperforate sheetlet of one, canceled "Poczta Polowa / 136 / 4 VI 46", v.f., one of only a few known, cat. €4500 (Cat No. Sass.F13A) (Image)

Cat. €4500, Est.US$1,000

1946 souvenir sheet (white paper) of only three instead of four values (45gr green omitted), unused without gum as issued, v.f., one of only two recorded, with 2019 Dr.Avi certificate, cat. €12000 (Cat No. Sass.F1Ac) (Image)

Cat. €12000, Est.US$3,000