The 150th Anniversary of the Swiss Federal Office of Topography 1988
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1988
The 150th Anniversary of the Swiss Federal Office of Topography
13. September WM: None Sheetsize: 50 Design: Beni La Roche. Engraving: Courvoisier. S.A. Perforation: 11¾
![[The 150th Anniversary of the Swiss Federal Office of Topography, type BAU]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Switzerland/Postage-stamps/BAU-s.jpg)
