An AM REF 10F/94 RAF key.

This is quite a scarce Marconi Air Ministry morse key. An Air Ministry key model AM 10F/94, used by the RAF c1940's. The overall length including the arm is 5.1/2" by 1.5/8ths wide (140mm by 42mm). Stamped on the base is PS 5785 A.

Notice the main arm is bent in a slight curve. It would have originally been straight, so this little key has taken some bashing :o)