Sears Roebuck co.
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.
I believe that your Sears shotgun is a Winchester model 37A shotgun that was made for Sears Roebuck And Co,.
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.
I dont have that specific model number listed, but the 102 prefix generally denotes Savage/Stevens.
I'll take it for free :)