A model 1200 made by Browning is unknown. No such model exists. Winchester made a model 1200 Shotgun, perhaps that's what you are looking for.
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.
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.
Your Sears model 200 shotgun was made by Winchester.The model 1200 Winchester is the same firearm.
Winchester 1200
1964
The best that I can do for you is say that the Winchester model 1200 shotgun was made from 1964-1981.You may want to check with winchester home page and see if there is any help for you.
The Sears model 200 is a Winchester Model 1200.
Your winchester model 12 shotgun was made by winchester in 1920.
Your winchester model 1897 shotgun was made by winchester in 1927.That makes your shotgun 84 years old.
Your winchester model 12 shotgun was made by winchester in 1953.
Your winchester model 12 shotgun was made by winchester in 1937.