DOUBTFUL - St. Thomas & Prince 2010

Format: 1 Block
Title: Entreposto de escravos
Lighthouse: Fort Sao Sebastiao

Thanks to Klaus for the info

DOUBTFUL - Mali 2010

Title: 30 Anniversary Olympic Games "Moscow 1980"
Format: Several blocks with 1 stamp each.  Two of them showing lighthouses.

DOUBTFUL - Rwanda 2010

Two blocks,  very similars to the serie of Lighthouses of the World, of 2010 also.

Title: Lighthouses I and Lighthouses II
Format: 2 Blocks with 4 stamps each.

DOUBTFUL - Union des Comores 2010

Title: Lighthouses and Birds of the Indian Ocean.
Format: 2 Blocks

DOUBTFUL - St. Thomas & Prince 2010

Two blocks dedicated to the National Museum of ST&P.  One with the flag and the other with the national seal.  Both blocks in the background shows the fortress of Sao Sebastiao and the lighthouse.  The National Museum is in this building.

DOUBTFUL - Mali 2010

Title: Great Explorers and Lighthouses (continuation)

Format: Blocks with 2 stamps

James Cook
Lighthouse: Chipiona (Spain)

Hernán Cortés
Lighthouse: Ras Taguermess (Tunisia)

Sir Francis Drake
Lighthouse: El Fangar (Spain)

David Livingstone
Lighthouse: Agioi Theodoroi / Argostóli (Greece)

Hernando de Soto
Lighthouse: Calais (France)

DOUBTFUL - Malawi 2010

Title: Lighthouses and Shells
Format: 2 Minisheets with 2 stamps each

DOUBTFUL - Rwanda 2010

Title: Lighthouses of ...
Format: Minisheets of 4 stamps 

Lighthouses of Africa

Lighthouses of Asia

Lighthouses of Europe

Lighthouses of North America

Lighthouses of Oceania

Lighthouses of South America

DOUBTFUL - Congo (Republic) 2010

Title: Marine Fauna and Lighthouses

Format: 5 Minisheets with 2 stamps each

DOUBTFUL - St. Thomas & Prince 2010

Filatelia de Portugal
Lighthouses: Cape Mondego and Aveiro

DOBTFUL - St. Thomas & Prince 2010

FAROIS - BLOCK  A

Lighthouses:       
- Eddystone (England)
- Bell Rock (Scotland) and the image of his builder, Robert Stevenson.
- "Lighthouse by V.G.Shukov, Ukraine  1910" See below (*)
- Cockspur Island (USA)
- Kopu (Estonia)

FAROIS - BLOCK  B

Lighthouses:

-Pigeon Point (USA)
-Cape Palliser (New Zealand) outside the stamp.


(*) About "Lighthouse by V.G.Shukov, Ukraine 1910"

The tower depicted in this stamp was builded by Shukov, but it´s not a lighthouse and never was. This construction was the world first hyperboloid structure and was builded for the All-Russia Industrial and Art Exhibition of 1896 in Nizhny Novgorod. After that, the tower was moved to Polibino, where it is currently.

Shukov Tower in Polibino (Russia)
Photo by Arssenev

One lighthouse builded by Shukov located in Ukraine is the Stanislav-Adzhigolsky range, rear. And in 1911 it looked like this:

DOUBTFUL - Mali 2010

Title: Great Explorers and Lighthouses

Fernando de Magallanes
Lighthouse: Knarraros (Iceland)

Roald Amundsen
Lighthouse: Split Point (Australia)

Marco Polo
Lighthouse: Torre de Hércules (Spain)