+1. (+2?) The finish doesn't look crisp enough to be a S&W factory job. FWIW factory nickel S&W revolvers have blued finish on the ejector star and ejector rod, and the hammer and trigger will have color case finish (appears grey with green and purple swirls). It looks like your revolver has a nickel-plated hammer, trigger, and ejector rod, although it's hard to see for sure in the pictures.
Furthermore, I'm positive this is a British pre-Victory due to the proof marks on the LH side of the barrel and behind the LH side of the trigger guard. Although the pictures are a bit blurry, the trigger guard proof mark looks almost identical to a British proof mark on a non-refinished British Victory I used to own.
The stocks are aftermarket. I'm also guessing they're plastic, as they look too shiny and uniform to be genuine staghorn.
Regarding the value, it's probably in the $125-$200 range depending on your local market. Many thousands of former Lend-Lease British Victory revolvers were sold as surplus on the American market after the UK switched to 9mm pistols in the 1950s. Most of these guns originally had ugly matte greyish-black finish and drab-looking plain walnut stocks, so importers often dressed them up with nicer finish and aftermarket stocks to increase their marketing appeal. However, this hurt their values as collectibles.