The 100th Anniversary of the Milanković Calendar 2023
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2023
The 100th Anniversary of the Milanković Calendar
November WM: None Design: Boban Savić. Engraving: Forum. Perforation: 13
![[The 100th Anniversary of the Milanković Calendar, type ]](https://www.stampworld.com/media/catalogue/Serbia/Postage-stamps/1227-b.jpg)
