aircraft transmitter tunning unit type TU-10-B for B-24 and B-17 aircraft

[kyhistorian01]

I picked this unit up over the weekend at a antiqe store. The unit is complete inside and out except for the black frame that holds the calibration chart. on the front of the unit. If anyone knows where I can get this part to complete the unit please let me know. Its a nice addition to my Air Corp display and I only paid $25 for it. Thanks in advance for any help.

 

The first photo shows the unit I picked up and the second shows a unit with the piece I am missing. I have it on the latest finds thread as well along with other things I stumbled across.

 

Robert