The 150th Anniversary of Prof. Josef Stefan 1985
Now showing: Austria - Postage stamps - 1985 - The 150th Anniversary of Prof. Josef Stefan - 1 stamps.
1985
The 150th Anniversary of Prof. Josef Stefan
22. March WM: None Sheetsize: 50 Design: Adalbert Pilch y Rudolf Toth. Perforation: 14¼ x 13½
![[The 150th Anniversary of Prof. Josef Stefan, type AYV]](https://www.stampworld.com/media/catalogue/Austria/Postage-stamps/AYV-s.jpg)
