A huge collection of the WIPA 1933 Exhibition poster stamps that were designed by Ludwig Hesshaimer. These poster stamps were issued in 2 sets of each 10 colours and 10 designs. All 20 colours are present in this collection, both as series and as strips of 10 stamps. Next to this there are a lot of overprinted stamps and strips, covers and cards as well as some specialties and a set of undented proofs. Even a few of the original sachets are included. Another WIPA 1933 collection in this size and completeness will be hard to find.