This is a telegraph key on a
hinge that flips over and attaches to your knee.It
is in great condition and is marked J-37 JFC on
the base and it is markedJFC ELEX INC s/n 27594
on the cross bar. On the side is marked KY-116/U
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This Phenolic oval based key was
vey widely used in many different applications.It
was made by at least 5 manufacturers and mounted
on several different bases.They are VERY common.
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