This will not fit a model 12
No.
your Winchester model 1200 was made in 1986,with the serial number you provided.
your Winchester model 1200 is going for anywhere from 100-220 dollars depending on condition.
200 dollars
$200
I can say that the model 1200 Winchester shotgun was made from 1964-1981.The model 120 ranger was the entry level shotgun to the model 1200.Winchester did not keep records of the serial numbers assigned to the years of production of the model 120 ranger shotgun,but I can assume that yours was made during the same time span as the higher level model 1200.
50-300 USD
A Winchester 12 gauge model 1200 pump shotgun holds 2 in the tube and 1 in the barrel. So it holds 2+1 which makes 3 total.
If you are asking if Winchester made a Ranger model 120/12 gauge shotgun,then the answer is yes.It was the economy version of the model 1200 shotgun which was made from 1964-1981.
See the link below for the owner's manual
Winchester 1200