The 100th Anniversary of the SGC - Colombian Geological Survey 2016
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2016
The 100th Anniversary of the SGC - Colombian Geological Survey
10. November WM: None Sheetsize: 4 Design: Mónica Marcela Vargas Engraving: Cartor Security Printing Perforation: 13½
![[The 100th Anniversary of the SGC - Colombian Geological Survey, type CTX]](https://www.stampworld.com/media/catalogue/Colombia/Postage-stamps/CTX-s.jpg)
