Patent bureau, 100th anniversary 7 öS — Austria, 1999
Patent bureau, 100th anniversary (Austria, 1999), face value 7 öS. Photo, catalogue value, details and photo identification.
- Issue date
- 1999
- Face value
- 7 öS
- Colors
- Multicolor
- Print run
- 2,800,000
- Yvert
- AT 2106
- Michel
- AT 2276
- Stanley Gibbons
- AT 2526
- Scott
- AT 1781