You can find store brand charts in the Blue Book of Gun Values
About half a dozen companies made shotguns for Montgomery Wards through most of the 20th century.
Manufactured by Mossberg for Montgomery Wards.
Mossberg made most of the Hawthorne bolt action shotguns. They were sold as a Montgomery Wards special.
Your wards Westernfield model 30 was made for Montgomery Wards by the stevens Firearm company.The Stevens model 520 and yours are the same firearm.These shotguns were made from 1936-1942.
Savage Fire Arms Company for Montgomery Wards
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.
Excel was a trade name used by HD Folsom Arms and Iver Johnson Arms and Cycle Works on shotguns made for Montgomery Wards.
Mossberg made the Wards model 550cd. In fact, they made all of the 500 series shotguns sold by Wards. lcj
Several manufacturers made Western Field shotguns for Montgomery Wards. You would have to identify the exact model.
Wards, JC Pennies, Sears and all the rest stopped around 1985.
The Western Field model 550C was manufactured by Mossberg for Montgomery Wards.
I have a Wards Western Field EJN-750 in .243, built on a Sako L57 action, number 3091. I purchased it new at the Montgomery Wards in Albany, NY in 1960. I believe it was manufactured in 1959 or 1960, but been unable to identify who manufactured it for Wards. There was another EJN-750 in .306 on the sale table, but I couldn't afford another $68 for it!