1760 (ca) cover addressed to Monsieur de Chapski, Chamberlain de la Majeste Roi de Pologne, duc de Lorraine in France, with "Par Alemagne" hs and ms due markings, partial wax seals on back, fine letter to the chamberlain of probably Stanislas Leszczynski, King of Poland, Duke of Lorraine and Bar, Louis XV's father-in-law (Image)

Est.$500

1770 (ca) cover addressed to Czarnawczyce, via Brzesc, with unclear strike at upper right (Nieborow?), manuscript "6s" at top, red wax seal on back, fine (Image)

Est.$500

1790 (ca) home-made envelope addressed to Pan Osolinnski, via Warszawa, Wegrow, Krzemien, endorsed "Pilno", with unclear strike (Krzemieniec?) at bottom left (Image)

Est.$500

1796 cover addressed to Piotrkow, endorsed "Pilno Pilno", with unclear strike at upper right (Crakovia?), left panel missing from back, with manuscript date and additional notations (Image)

Est.$500

1856 stationery 10k entire envelope, with indicia on backflap, addressed to Telsiai, with boxed WILNA 8 Aug departure datestamp on front, overall toning, otherwise fine (Image)

Est.$500

1860 10k blue & rose, nice color, tied on piece by "1" in concentric rings, usual centering, signed Wiatrkowski (Fi.1b) (Cat No. 1) (Image)

Est.$300

1860 10k blue & carmine, beautiful color, fresh and fine stamp (Fi.1ac) (Cat No. 1) (Image)

Est.$500

1860 10k blue & rose, nice color, tied on cover by "1" in concentric rings, usual centering, addressed to Riga, with red Warszawa 9/4 departure pmk alongside, arrival pmk the next day in Riga, cover with tears at top, otherwise fine usage, signed Wiatrkowski (Fi.1b) (Cat No. 1) (Image)

Est.$1,000

1919 Krakow Issue, 90h magenta, form I-9, used, v.f., signed Dr.Kronenberg, with his 1999 certificate, cat. $1000 (Cat No. 50) (Image)

Cat. $1000, Est.$250

1934 Gordon Bennett Challenge ppc showing both pilots, franked with red overprint and special label, v.f. (Image)

Est.$200