1796-1944, Balance of an exhibit collection about Poland, WWI and the Polish Soviet War, and 1944 POW camp stamps and mail from Woldenberg and Gross-Born, with Gross-Born Olympic set of 3 unused, 20pf in complete sheet of 10, set on registered express cover with Olympic flag cancel, set in pairs on card tied by Philatelic Exhibition cancels, "ROK OLIMPIJSKI" hs on POW letter, Woldenberg with 10pf proofs & colour trials (6), used on piece and on illustrated card, "ROK OLIMPIJSKI" horseshoe hs on POW cover, the rest a mixture of material incl. two pre-stamp covers, three covers/cards from the 1919 peace conferences in France and 1920 Spa Conference, military mail, two 1924 AN Paris ppc's of the Polish team, etc. (Image)