First, you need to find an owner's manual. Look on line, in gun shops, place a want ad, check in the Firearms Disassembly series of books (you can find them for sale on line) etc.. If you can't find one, find a qualified gunsmith and have them fix/clean it.
the thing hold the barrel to the pump
50-250 or so
$150-165
in realy good codition about $400
To disassemble a Westernfield .410 gauge pump shotgun, first ensure the firearm is unloaded. Remove the forend by unscrewing the retaining screw located on the underside of the forend; this allows you to slide the forend off the magazine tube. Next, remove the barrel by unscrewing the magazine cap at the muzzle end, then slide the barrel off the receiver. Finally, to access the internals, you can remove the trigger group by unscrewing any retaining screws and gently pulling it out of the receiver. Always refer to the manufacturer's manual for specific instructions and safety precautions.
Your shotgun was made by savage/stevens for montgomery wards(westernfield).
Gun shops, gun shows, want ads
No published sn data. 50's or so
how much money is a westernfield model xnh569h
Your shotgun was made for Montgomery Wards (marked with their brand- Westernfield) by Mossberg, and is their model 550. As far as age- no way to tell. IF your shotgun does not have a serial number, it would have been made prior to 1968. <><><> Note to previous poster- Sears did not use the Westernfield brand- that belonged to Montgomery Wards. They DID use J.C. Higgins and Ted Williams as brand names.
You are probably thinking of a Stevens model 520
From $70-$140 depending on condition. Basically a 12ga Mossberg 500 made for Montgomery Wards. sales@countrygunsmith.net