Portrait of astronomer and mathematician Mohammed al-Khorezm
90%
| Country: | Soviet Union, USSR |
|---|---|
| Issue: | 1200th Birth Anniversary of Mohammed al-Khorezmi. |
| Date: | 1983-09-06 |
| Print: | Photogravure and Recess |
| Size: | 28 x 40 |
| Perforation: | comb 11½ |
| Emission: | Commemorative |
| Format: | Stamp |
| Face Value: | 4 Russian kopek |