Gemma, I'm finding other things to post beside mailboxes and I know that's okay for me to do. As I've told you Americans, at least here in Queens, have no imagination with mailboxes...
So here are some stamps from the Cayman Islands.

We swam and snorkeled in Stingray City some years ago. It was thrilling!
Go visit Gemma - Grayscale Territory to visit other participants