You have only provided a generic description. Trying to put a value on anything with just this limited information provided is difficult. Value depends on a combination of many factors. Without a detailed description to include, finish, barrel length, overall condition, stock material, sights, box, original paperwork and any accessories, only a general estimate can be given. This weapon could be in the 100-500 USD price range.
No such model in the S&W line.
100-400 USD
100-350 or so
50-300 usd
50-450 usd
Smith and Wesson 9mm Model 39-2 Chrome finish.
700
100-450 usd
50-550 usd
100-425 USD
100-400 USD
200 US Dollars.