It was made in 1937.
"Your" Winchester Model 21 Double Barrel Shotgun was manufactured in 1933, giving it an age of 77 years, as of 2010.
Winchester. sales@countrygunsmith.net
From what I could find your gun is made by Winchester. It should say it on your gun somewhere though.
Your shotgun was manufactured in 1947.
1956 This shotgun WA manufactured in 1956
The Winchester 140 12 gauge has a choke barrel at 28". This is the same choke size as the 20 gauge model.
The Winchester Ranger Model 120 typically uses a 12-gauge shotgun barrel. To find a compatible rifled slug barrel, look for a barrel specifically designed for the Winchester 120 series, such as the Winchester 1200 or 1300. Ensure that the barrel is compatible with your shotgun's action and gauge. It's advisable to check with a firearms dealer or the manufacturer for the most accurate options available.
10-500 usd
Look on bottom of receiver and barrel
Is this shotgun manufactured with a twist steel barrel
Your Winchester Model 12 Slide Action Shotgun in 12 gauge with serial number 1747610, was manufactured in 1959.
Model 1912 Manufactured 1926.