Montenegro
Now showing: Montenegro - Postage stamps (1874 - 2024) - 1 stamps.
2007
The 425th Anniversary of Gregorian Calendar
4. January WM: None Sheetsize: 9 Perforation: 13¾ x 13¼
![[The 425th Anniversary of Gregorian Calendar, type BK]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Montenegro/Postage-stamps/BK-s.jpg)