I had a dispute with a friend of mine, I stated that there were only 752, 752cargo and 753. He said there was a 752ER as well...
At the end he showed me the website of Martinair:
But isn't this not the normal 752 specifics? (I am sorry, it is in dutch, but i think english speakers will understand it) This is the PH-AHI, and is the only 757 in the martinair fleet.
Note: The picture below is of a 762!
PS. We are still friends