50 years found "Schistosom Mansoni"
50%
| Country: | Brazil |
|---|---|
| Issue: | 50 Anniv. discovery of Schistosoma mansoni |
| Date: | 1959-12-28 |
| Perforation: | 11¾ |
| Emission: | Commemorative |
| Format: | Stamp |
| Face Value: | 2.50 Brazilian cruzeiro |