Cayman Islands - King Edward VII (1902-1910) - Used

Located in the western Caribbean Sea. 

The first Post office opened in 1889. Prior to 1889, a Jamaican merchant named George Orwitt acted as a postal agent for the Cayman Islands in Jamaica.  Mail destined for Cayman residents was first addressed to Mr. Orwitt, who then delivered letters to ships bound for the Cayman Islands. This arrangement stayed in effect until the opening of the Post Office in George Town.

It was not until 19th February 1901 that stamps bearing the name of the Cayman Islands first appeared.