$450.00
1949
about $100
I believe that your Sears shotgun is a Winchester model 37A shotgun that was made for Sears Roebuck And Co,.
about $100
Nothing much. Single shot, 20 gauge, and "Sears and Roebuck" on it (it was probably made by Savage) all work against it having a high value. It may be worth $40-$50 to someone.
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.
http://www.e-gunparts.com
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.
http://www.histandard.info/PDF/Sears%20Shotguns.pdf
The value of a Sears Roebuck 12-gauge 101.100A shotgun is around $100. This depends on the the condition of the firearm.
Winchester