 |
What: stamp
Type: German Democratic Republic postage 4/23/1958 10pf grngray issue=Planck 100th d=h (Planck constant) wmk=quatrefoil & DDR State: unused Visibility: public Owner: Stan Shebs |
Record of changes |
| |
What: stamp
Type: German Democratic Republic postage 4/23/1958 10pf grngray issue=Planck 100th d=h (Planck constant) wmk=quatrefoil & DDR State: unused Visibility: public Owner: Stan Shebs |
Record of changes |