Semi - Postal issues. 1945, Postal Worker's Convention at Poznan, 1+5zl green, left sheet margin imperforated single (full OG, NH) and left sheet margin vertical imperforated pair with parts of adjoining stamps at right (Kraków 12.9.45 cancellation), both are VF, Est. $150-$200 (Image)

Semi - Postal issues. 1945, Last Stand at Westerplatte, 1+9zl slate blue, imperforated single and a stamp from printer's waste with a part of adjoining stamp at left, full OG, LH or no gum as produced, VF, Est. $100-$150 (Image)

Semi - Postal issues. 1946, Polish Bureau of Education, 3+22zl, 6+24zl and 11+19zl, complete set of three and souvenir sheet of three containing all these stamps, full OG, NH, VF, C.v. $520, Est. $150-$200 (Image)