These shotguns would have a flaming bomb arsenal mark on the gun.They would also have United states property marked on the shotgun.
model 620-a
what year was model 620- serial# 11240 made
http://www.gun-parts.com/index.html/
I would try numrich gun parts corp. They can be found on the web.
Try searching for a Savage model 620A or Stevens 620 stock on ebay, or gunbroker.com. The model M060 Westernfield is a Stevens 620, while a Westernfield model 60 is the Savage 620A
.620 = 62 caliber and would fire a patched .600 or .610 ball, and is roughly equal to a 20 gage in shotgun terms.
100-700 or so
The 620 was the original production run, the same gun with minor variations would be the second run and there for the -A. I have a Savage model 1899. This gun was run all the way up to 1899-M
1926-1945
SAVAGE 620-620A model the savage model 620 is a shotgun. numerichs or the blue book (which) have it wrong. the action on mine looks to be either savage or mossberg, probably pre war. i would start by referencing drawing and photos of both makes I recently picked up a Western Field Model 31 from Auction. It is the same as a Mossberg Model R. It was the last of the letter designations given to a .22 rimfire by Mossberg. Production dates fell into the 1930-1932 range. Mossberg began number designations for their .22s in 1933.
The model sb-620A 20 GA. pump shotgun was a copy of the Winchester model 1400 and was manufactured by the Savage Arms Co. for Montgomery Wards stores from 1926-1945. In excellent condition (like new) this gun can sell for as much as $250, in good condition, as much as $175.
Did you push the little button next to the safety?