Micro fracture cast pure metal, microscope 30 Pf. — Germany, Berlin, 1971
Micro fracture cast pure metal, microscope (Germany, Berlin, 1971), face value 30 Pf., “100 years material testing in Berlin” series. Photo, catalogue…
- Series
- 100 years material testing in Berlin
- Issue date
- 1971
- Face value
- 30 Pf.
- Colors
- Multicolor
- Michel
- DE-BE 416I