1933 WIPA collection beautifully presented on 32 exhibition pages and loose, incl. mint 50g+50g on ordinary paper and granite paper and both used with special cancels, mint nh WIPA mini sheet incl. presentation sleeve, one plain cover and two official covers sent registered with 50g+50g and special cancel, History of Mail Transport vignettes in blocks of 10 in 10 different colours and WIPA presentation folder with 10 imperfs signed by the artist below, two pages of St. Stephens Cathedral vignettes, set of nine Mercury Head sheetlets, four „Robert Kronfeld“ postal stationery airmail cards sent from the show, two Vienna-Budapest flight covers, exhibition envelope used, used and unused official illustrated postal stationery, a day ticket for the show, publicity cards, et., a fantastic lot for the specialist