Portugal
1.1 - 1.3$
price on 07.05.2023
Soils - Cycle of Natural Resources
| Country: | Portugal |
| Type: | Postage stamps |
| Series: | Soils - Cycle of Natural Resources |
| Nominal: | 20 $ |
| Year: | 1978 |
| Material: | Esmalte |
| Perforation: | comb 12 x 11¾ |
| Mintage: | 500,000 |
Soils - Cycle of Natural Resources
 Red Mediterranean Soil 0.08$ |  Stone formation 0.11$ |  Alluvial soil 0.48$ |  Black soil 1.1$ |