[CW] Vibroplex Key Project. Is it a J-36 or a Lightning Bug?

[Mike Baker]

My newly acquired key is offering up a mystery or two.
Black crinkly finish base (1940 to mid-50's Lightning Bug or J-36) all parts
appear to be chromed save for a few screws.
NO Label.
It wasn't until I made a more detailed observation that I noticed that the
bottom showed where there were holes for the nameplate rivets to go BUT the
top showed no rivet holes.  The rivets had been cut off and I presume the
key over sprayed enough to cover them up. Rivet locations are the same as
the lightning bug so I am now assuming that's what it is.
BUT, then I discover clamping marks in the finish along both sides near the
paddle end as if it had been in a vise.
Further observation indicates two lines that cross the key almost directly
over the rivet locations but not squarely. On a diagonal. They intersect
outside the key maybe 5 inches away from the key base on the side by the
terminals. Odd. As if it were clamped to a desk maybe?

Here is the real mystery.
Orange lettering that is barely readable at all (due to the overspray and ?)
on the top nearest the side of the dit post almost directly across from the
most forward terminal post!  NOT something I have seen in any paddle. The
J-36 marks were on the bottom and resembled a square. This appears to be
some form of lettering. I cannot make out what it says.

Anyone got a clue as to what I am seeing?

Before I attempt to restore this key I want to make sure I am not trashing
some "one of" type of heirloom! 

Ideas? 

Mike Baker  K7DD