Uruguay
Printed in sheets of 50 stamps.
| Country: | Uruguay |
| Type: | Postage stamps |
| Series: | Power Dam on Rio Negro |
| Nominal: | 3 $ |
| Year: | 1940 |
| Material: | Medium |
| Perforation: | 12½ |
| Mintage: | 20,000 |
Power Dam on Rio Negro
