It is the same as the Kessler 128 manufactured between 1951-1953.
The Western Field model 550C was manufactured by Mossberg for Montgomery Wards.
Email us exactly how your shotgun is marked. firstname.lastname@example.org
The Western Field shotgun was sold by Montgomery Ward and made by Mossberg. Made around 1964. I inherited one that is in mint condition and still fires. It is a 410 single barrel 150c shotgun.
I NEED TO KNOW WHERE I CAN GET A NEW BARRELL TO RESTORE IT
I would guess it was made by Stevens.
Chances are that your shotgun was a model 385k,or a 395K model shotgun made by Mossberg firearms company.
Savage Fire Arms Company for Montgomery Wards
I dont show that in my cross-reference. If you can send a digital picture, we can ID it for you. email@example.com