Stamps of Germany, 14 Aug 1964
1 to 3 of 3
postage
1964, Aug 14 unwmk p. 14
| X | 10 | multi | benzene ring |
1964, Aug 14
| X | 15 | multi | Cerenkov radiation |
1964, Aug 14
| X | 20 | multi | gas engine |
1 to 3 of 3
| X | 10 | multi | benzene ring |
| X | 15 | multi | Cerenkov radiation |
| X | 20 | multi | gas engine |