- | 15c | red | Seaplane over Magdalena River P | — | — |
- | 15c | brnorg | Seaplane over Magdalena River S | — | — | |
- | 15c | ver | Seaplane over Magdalena River S | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | Seaplane over Magdalena River Br | — | — | |
- | 15c | red | Seaplane over Magdalena River Br | — | — |
- | 15c | red | Seaplane over Magdalena River C | — | — |
- | 15c | red | Seaplane over Magdalena River CA | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | Seaplane over Magdalena River D | — | — | |
- | 15c | red | Seaplane over Magdalena River D | — | — | |
- | 15c | red | Seaplane over Magdalena River D | — | — | |
- | 15c | red | Seaplane over Magdalena River D | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | Seaplane over Magdalena River PE | — | — | |
- | 15c | red | Seaplane over Magdalena River PE | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | ovpt, seaplane over Magdalena River | — | — |
- | 15c | red | seaplane over Magdalena River | — | — |
- | 15c | dkgrn | Magdalena River & Tolima Volcano | — | — |
- | 15c | dkgrn | Number 15 | — | — |
X | 15c | blgrn & vioblk | petroleum | |||
X | 15c | ver & vioblk | petroleum (1939) | — | — |
- | 15c | dkgrn |
- | 15c | on 80c (3) |
- | 15c | on 20c (166) |
- | 15c | |||||
- | 15c |
- | 15c | car | Spanish Fortification Cartagena |
- | 15c | red | Bay of Santa Maria |
- | 15c | bl | Fort in Cartagena |
- | 15c | bl |
- | 15c | bl | ovpt, Fort in Cartagena |
- | 15c | bl | ovpt, Fort in Cartagena |