Stamps of Rio de Oro, 4p denom
1 to 9 of 9
postage
1905, Dec unwmk (no perf info)
| - | 4p | blgrn | King Alfonso XIII | — | — |
1907 1907 issue
| - | 4p | dkbl | King Alfonso XIII | — | — |
1909
| - | 4p | King Alfonso XIII | — | — |
1912 1912 issue
| X | 4p | cl | King Alfonso XIII | 1.00–10. | 1.00–10. |
1914 1914 issue
| - | 4p | King Alfonso XIII | 1.00–10. | 1.00–10. |
1917 ovpted
| - | 4p | cl | ovpt, King Alfonso XIII | — | — |
1919 1919 issue
| - | 4p | King Alfonso XIII | 1.00–10. | 1.00–10. |
1920 1920 issue
| - | 4p | dkvio | King Alfonso XIII | 1.00–10. | 1.00–10. |
1921 1921 issue
| - | 4p | King Alfonso XIII | — | — |
1 to 9 of 9