But they wouldn't have been real old - not during the time they'd've been in use.
The revolver and the grips would only have been a couple of years old, with the blue still bright and the grips still clean.
Artificially aging something to look like it was found today, in order for it to be used in yesterday's scenario just never made any sense.
'Buffalo Brothers' has/had a grip line that was of the same coloration - even included fake, molded-in age cracking - they never sold many sets.
You'll do what you like, I'm sure, but I'd try to salvage their look by using a Q-Tip and straight Clorox on the smooth parts until I got to 'Light Butter' in color - rinsing continually - the dark part can stay in the crevices.
Scouts Out!