50 Years of the National Laboratory of Civil Engineering 80 $ — Portugal, 1997
50 Years of the National Laboratory of Civil Engineering (Portugal, 1997), face value 80 $. Photo, catalogue value, details and photo identification.
- Issue date
- 1997
- Face value
- 80 $
- Colors
- Multicolor
- Print run
- 500,000
- Yvert
- PT 2183
- Michel
- PT 2205
- Stanley Gibbons
- PT 2577
- Scott
- PT 2178