Took the attached pictures yesterday during a visit to the Museum of Flight near Edinburgh, Scotland. The museum is based on an old Royal Naval Air service air station at East Fortune near the vilage of Drem in East Lothian. It eventually became RAF Eat Fortune during the second world war and was the departure point for the airship R34 when it made the first return crossing of the Atlantic.
The plate accompaning the F4S doesnt give much about its history other than it spent most of its career with the USN before joining the Marines. I beleive it maybe on loan from the Fleet Air Arm museum but i'm not sure. Maybe somebody on here will recognise it.