Buy Jim Spacek's book.
Impossible to answer without a serial number.
50-100 USD
Blue Book of Gun Values
No published sn data
No sn data for that model I can find.
The value of an HR Model 935 revolver can vary based on factors such as its condition, age, and any modifications. Generally, prices can range from $200 to $600, depending on these factors. To get an accurate estimate, it's advisable to check recent sales or consult a firearms appraiser or collector.
Cornell Publications
Try ask.com if you haven't already.
You will have to call S&W to find out.
You can find out how old an HS Model 10 22 revolver is by taking it to a local pawn shop or gun dealer. You can also use publications that are written to help identify the age of a revolver.
You need to see a gunsmith
I am showing that HR made a revolver in models 826,829,832,and 922.If you check your model number again it may be one of these.Please repost your question if that is the case.