a little older than my 263...! I think about 1960's-1970's
westernfield 20ga shotgun
The initial run of model 37 Winchester shotguns were not serial numbered.They were made from 1936-1963 when serial numbers were not required.Winchester did make another run from 1973-1981 but these were serial numbered and were marked as the model 37-A.
Your Winchester model 101 20ga shotgun was made by Winchester in june,of 1966.
Model 37's were not serial numbered. It was introduced in 1936 and discontinued in 1963. A total of 1,015,554 were made.
Your serial number identifies your Winchester model 101 shotgun as being chambered in 20ga,and having been made in March of 1966.
This gun is not a Superposed model, but a Citori 425 in 20ga. It was made in 1996
have you found the number
The Marlin model 30G serial number 3512 20 gauge shotgun is valued at $350 in good condition. It is valued at $750 in excellent condition.
No way to answer without the serial number
Your browning 20ga model auto-5 shotgun was made by FN of belguim for browning in 1962,with the serial number provided.
Your winchester model 12 shotgun in 20ga was made in 1913.I should point out that the chamber of your 20ga shotgun is 2 1/2in.The winchester model 12 in 20ga was chambered in 2 1/2in until 1927.So caution is advised when shooting your shotgun!Do not attempt any modern day shotgun shells that have a length of 2 3/4in.
My answer would be no.Browning never used a K prefix to the serial number on any model of their shotguns,let alone the 20ga models.