[Hallicrafters] S-40A Knob Question

[Wj5mh at aol.com]

The main and bandspread tuning knobs of the S-40 series (and S-38) appear  in 
pictures to have a ring insert.  Is this ring metal or is it painted  on?  If 
it's painted, what is the color?  White or silver?
 
Thanks,
Joe