[R-390] R-390 questions

[R390rcvr at aol.com]

Mike:
 
I have seen a few dozen 390s, and hundreds of R-390As, never a green one.  
There does tend to be slight variations in the hue of the gray, but I don't  
believe there were any green ones originally.
 
The Racal RA17 has the plastic discs behind the main knobs, and I have seen  
one or two people modify the R-390 main knobs to have the same look. Again, I  
don't believe that was ever a factory mod. I would say this one has been  
carefully redone, between the paint and knobs, not original.
 
Is it a stamped or silk screened panel? Is the back of the panel the same  
green, or is it gray?
 
Randy