@1932 to at least the late 80's
The only figure that I can provide is Winchester only made 32,500 model 21 shotguns from 1931-1988.I would say that your Model 21 Grand American was probably made between 1960-1987.You might be able to find the correct amount of 16ga model 21 shotguns through the Cody firearms museam,Cody Wyoming.
WINCHESTER MADE MOST THERE MODEL 1400.
The savage model 94 series of shotguns were made from 1926-1945,with a total production of 934,000 made during this time.
the Winchester 9410
Your shotgun was made for Montgomery Wards by the Savage arms Company.The Savage Model 620A and your Model 60-sb620 are the same shotgun.These Savage model 620A shotguns were made from 1926-1945.There were 66,500 shotguns made during this time span.
If you are willing to get your winchester model 21,28 gauge shotgun authenticated by a winchester facory letter,then this shotgun could range in price from 25,000-30,000 dollars because it is generally believed that less that 100 model 21 shotguns were made by the winchester custom shop during the production of the winchester model 21.There was a production of 32,500 model 21 shotguns made between the years 1931-1988.Only 1100 were made by the winchester custom shop.You may get a letter on your winchester model 21 shotgun by contacting the the Cody firearms museum located in Cody,Wyoming.I would certainly have this shotgun valued by a qualified winchester collector assoc.member.
The last Marlin made shotgun was the Model 512 slugmaster,which was made from 1999-2001. After that Marlin made no more shotguns.
The original Savage?Stevens model 311 shotguns were made from 1926-1945.The more recent made Stevens model 311 shotguns were discontinued in the year 1989.
Your Winchester model 21 which is a hand made shotgun was made in the year 1932.Winchester made 330 model 21,s that year.The value cannot be determined without a much more detailed description of your shotguns overall condition including the bores.I would have a member of the Winchester collectors assoc.evaluate your shotgun.Winchester model 21,s can bring a very respectable price today.
2013
Both were High Standard Flite King shotguns. They are similar, but from different time periods. Very nice shotguns, not very pricey.
Made between the years 1926-1945