I would need to know the model number of your shotgun to help you with your question.
Mossberg.
Several manufacturers made Western Field shotguns for Montgomery Wards. You would have to identify the exact model.
Turn of the century
About half a dozen companies made shotguns for Montgomery Wards through most of the 20th century.
Your western field model 550AD was made by mossberg for montgomery wards.These shotguns were the same model number for mossberg ,as for montgomery wards.
Ithaca did not make any Wards Western Field Shotguns. Most were made by Stevens/Savage or Mossberg.Western Field, the Montgomery Ward brand name, should not be confused with Western Arms Company, a division of Ithaca that made shotguns that appear identical to Ithaca's Lefever Nitro Special from 1929 to 1946.
That would be Western Field.
your western field shotgun was made by mossberg,there model number was 385K.These shotguns are worth between 50-150 dollars.
Remington private labelled some Sportsman 58 shotguns for Wards under the Western Field name, also Savage, and I believe Wards may have arranged for some Italian guns - possibly Breda. sales@countrygunsmith.net
Revelation was a brand sold by Western Auto stores and made by various manufacturers.
Mossberg made Westernfield shotguns and rifles for department stores. My Westernfield shotgun is identical to a Mossberg 500.
Pretty sure it was Mossberg. Take a look at a list of Mossberg shotguns. I'm sure you will find one that looks like your Western Field.