You wil have to call S&W with the specifics of your 629
@1982. You will have to call S&W to narrow it down any further.
Can't be answered without the sn.
100-500 or so
50-600 usd
No way to answer since the serial number was not provided.
You will have to call S&W with the serial number. They can tell you when it was shipped from the factory.
You will have to call S&W
Request a copy of the owner's manual from the S&W website.
A S&W (Smith & Wesson) 629 Performance Center .44 Magnum revolver
50-500 usd
Best left to a gunsmith