The 25th Anniversary of the National Social Security Institute 2020
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2020
The 25th Anniversary of the National Social Security Institute
11. November WM: None Sheetsize: 50 Design: Georgi Pavlov Perforation: 13 x 13¼
![[The 25th Anniversary of the National Social Security Institute, type HIN]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-stamps/HIN-s.jpg)
