15th International Spectroscopical Conference, Madrid 1.50 Pta — Spain, 1969
15th International Spectroscopical Conference, Madrid (Spain, 1969), face value 1.50 Pta. Photo, catalogue value, details and photo identification.
- Issue date
- 1969
- Face value
- 1.50 Pta
- Colors
- Multicolor
- Print run
- 8,000,000
- Yvert
- ES 1581
- Michel
- ES 1812
- Stanley Gibbons
- ES 1982
- Scott
- ES 1570