Yes when I bought my 250 SL back in 1989 it had an aftermarket radio that we loose fitting and rattled around and made me crazy.
I never listen to the radio in my 2 classic cars anyway.
A member here was selling an extra radio delete plate for a 250 SL complete with all the fittings for $ 50.
I had it painted Horizon Blue to match my color and it looks great ( I think ).
The one funny thing is that my car originally came with a radio and antennae, so I removed the antennae and covered the hole with a round chrome blank out cover.
Not one person has ever questioned why the cover is there.
I recently also was able to buy an original type ivory stick shift 4 spd ball from a member here to match my ivory steering wheel.
Yes, as Len said, keep your eyes pealed on our for sale section and Ebay and one will pop up.
Best,
jz