International Prototype Metre & Krypton Spectral Line 15 Ct. — Switzerland, 1975
International Prototype Metre & Krypton Spectral Line (Switzerland, 1975), face value 15 Ct., “Meter Convention” series. Photo, catalogue value, details and…
- Series
- Meter Convention
- Issue date
- 1975
- Face value
- 15 Ct.
- Colors
- Multicolor
- Print run
- 10,036,000