If information has been published on the company, buy the book(s). Try Proofhouse.com.
The number 1400 refers to the Model number of your Winchester shotgun.
everything i have seen says 68-72/74 the 1400 was 64-68 and 74-95ish...
The Winchester model 1400 Mark II was only produced during the years 1968-1972.That is the time frame of your shotguns manufacture.
The model 1400 was made from 1964 to 1969...then it became the model 1400 MK II until 1972 then went back to model 1400 until 1974 then discontinued.
Your Winchester model 1400 semi-auto shotgun is valued at between 140-220 dollars,depending on overall condition and a good bore.
The Winchester model 1400 shotgun was made by Winchester from 1964-1981.
$1100-1400
Your Winchester model 1400 semi auto shotgun is gas operated.
How old and how much in value is a Winchester semi- auto 12 gauge shotgun model 1400 MK II serial number 483251
None
100-300 USD
1964-68