1928, Olympic games , Serie F: postcard 3 c. 'VOETBAL', unused, very fine and scarce (Geuzendam OL22)

1853, "DAMPSKIBET BERGEN", blue single circle with manuscript date "20/11", to Mandal; on reverse noted “1-8” for the cash payment of 8 skilling.

1860, Coat of Arms 10 k. deep blue/carmine, fresh colours and very good perforations, neatly tied by the four-ring numeral cancel “215” with circular “ZGIERZ” alongside to folded entire to Warsaw with reverse arrival, negligible toning on a couple of perfs, of no importance. A lovely and attractive cover in very fine condition, certificate Mikulski (1999) 
 
 

1918, Germania 20 pfg. blue with half-glossy overprint, mint never hinged, small natural inclusion, fine, scarce, signed Petriuk and Korszen with short-opinion (2018) (Fischer 12IIbax)

1918, Germania 40 pfg. with clear double overprint, used with illegible cancel, very fine, scarce, certificate Korszen (2018) and Petriuk PZF (2021) (Fischer 15Ib Np)

1918, Lublin Issue 45h. on 80h. blue together with Austria Postage Due 5h. red, tied by cds. “GRANICA 8.1.19” to registered cover to Vienna, vertical fold and some transportation wear, otherwise fine and a s scarce mixed franking which was only possible for a short period nof time, signed Schmutz and Petriuk with certificate (2025)

1919, Krakow Issue 15h. brownish-red, horizontal pair, position 89-90, with additional franking, tied by cds. “KRAKOW 16.II.19” to registered cover to Warsaw with arrival mark, backflap missing, otherwise fine and scarce, a.o. signed Schmutz and Petriuk with certificate (2025)

1919, Eagle 10 f. tied by straight-line “PORTO” (Type 125) to reverse of parcel card to Sanok, franked with Germania 20 pfg. and three singles 60 pfg., all tied by provisional cork cancellation of Jablonna, few obvious imperfections, an attractive provisional use of a regular stamp as postage due, this is the sole recorded showing this type of “PORTO” cancellation, sign. Petriuk with certificate (2025)

1921, Red Cross 10+30m. brown-carmine with additional franking, tied by cds. “WARSZAWA 26.4.21” to registered airmail cover to Prague with arrival mark, vertical fold and backflap missing, somewhat stained, otherwise a fine and very rare commercial cover, signed Petriuk with certificate (2025)

“POCZTA HOTELOWA POLONIA-PALACE LODZ" red boxed cancellation, clear on franked registered cover from “LODZ 20.XI.35” to Warsaw with arrival mark, vertical fold not touching cancel or adhesive, a fine and scarce entire, signed. Schmutz and Petriuk with certificate (2025)

1860, Warsaw City Post postal stationery envelope 3 k. blue, five unused showing printing variations on the posthorn, also two cut-outs, mostly very fine, scarce

1925, IAS with handwritten correction “80” on 50 gr., used with cds. “POZNAN -8.3.22”, vertical crease, small imperfections, otherwise fine, scarce (Fischer CC2b)