50-500 usd
With the brief description that you have supplied,I would say that you have a SMith and Wesson model of 1905 4th change revolver.
50-1000 usd
10-400 USD depending on specifics
In typical condition, $150-$250
Your smith and wesson model 10 with a great nickel finish remaining will be worth between 375-475 dollars.
What model?
50-500 usd
100-10000 USD depending on EXACTLY what you have.
You would need to include the overall condition of your revolver,the amount of original finish remaining,bore condition and serial number(to date and identify the correct model of revolver).Only then could a value be placed on the firearm in question.
Impossible to answer without a detailed description of all markings and features.
Engraved and nickel plated Smith Wesson Model 29