The 150th Anniversary of the Establishment of the Observatory in Hurbanovo 2021
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2021
The 150th Anniversary of the Establishment of the Observatory in Hurbanovo
21. May WM: None Sheetsize: 40 Design: Vladislav Rostoka Perforation: 13½
![[The 150th Anniversary of the Establishment of the Observatory in Hurbanovo, type AEN]](https://www.stampworld.com/media/catalogue/Slovakia/Postage-stamps/AEN-s.jpg)
