1920

1920 German Empire Postage Stamps Overprinted "PLÉBISCITE - OLSZTYN / ALLENSTEIN"
3. April WM: 1 Sheetsize: 100 Design: Paul Eduard Waldraff Perforation: 14 x 14½

https://forumupload.ru/uploads/001c/37/7e/2/t719091.jpg

1920 German Empire Postage Stamps Overprinted
May WM: None Sheetsize: 100 Design: Paul Eduard Waldraff Perforation: 14 x 14½

https://forumupload.ru/uploads/001c/37/7e/2/t850874.jpg