Depends on model and condition. Typically $100-$150.
about $100
Sears Roebuck co.
I believe that your Sears shotgun is a Winchester model 37A shotgun that was made for Sears Roebuck And Co,.
http://www.histandard.info/PDF/Sears%20Shotguns.pdf
about $100
$450.00
1949
You would have to list the model number of your shotgun,to identify the maker of your sears and roebuck shotgun,in order to get the correct buttstock.
The 12 gauge long tom 1900 shotgun by Sears and Roebuck is valued at $250 in excellent condition. In fair condition, it is valued at $80.
The value of a Sears Roebuck M-66 gauge automatic shotgun depends on its condition. This gun in excellent condition is valued between 120.00 and 180.00 as of 2014.
Winchester
I'll take it for free :)