0-500 USD depending on exact configuration, condition, etc..
On revolvers, they are usually on the butt. They MAY be concealed by the grips.
GunBroker.com
69-70
Wood
crimson trace grips for smith and wesson 39
Best left to a gunmsith.
Ask a gunsmith for assistance.
No serial number provided.
bone grips, chrome frame snub nose.
On the bottom of the grip. It is sometimes covered up by the wood of the grips. Take them off.
chec at: midwayusa.com
Loosen the grip screws.