The 100th Anniversary of the Austrian Patent Office - 1899-1999 1999
Now showing: Austria - Postage stamps - 1999 - The 100th Anniversary of the Austrian Patent Office - 1899-1999 - 1 stamps.
1999
The 100th Anniversary of the Austrian Patent Office - 1899-1999
16. April WM: None Sheetsize: 50 Design: K. Pach/W. Pfeiler Perforation: 13¾
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