I don't know. I have one also, and I am searching right for now for info. Sears did not make any firearms, but retailed firearms made for them under private brand names. Most of the Ted Williams branded guns were actually made by Winchester. If you can provide a model number, which is marked on the gun, we can be more specific. www.countrygunsmith.net
The Sears and Roebuck Ted Williams shotgun retails for about 250 dollars in excellent condition. This gun can be purchased for less than 150 dollars in used condition.
I believe that your Sears shotgun is a Winchester model 37A shotgun that was made for Sears Roebuck And Co,.
Marlin Model 59, 1959-1961
The Ted Williams 200 shotgun was manufactured by Winchester and was the same gun as their Model 1200.
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.
It is a Winchester 101, made in Japan. Depending on condition, $600-$800.
need a diagram of sears model 66m shotgun for takedown
You will need to find out who made it first.