Your westernfield model 550Al was made by mossberg for the montgomery wards co.(westernfield).These shotguns are still being made and are quite popular.I would check at mossberg,s site.The model designation for your wards shotgun made by mossberg is the mossberg model 500.
The Western Field model 550C was manufactured by Mossberg for Montgomery Wards.
Savage Fire Arms Company for Montgomery Wards
About half a dozen companies made shotguns for Montgomery Wards through most of the 20th century.
Mossberg for Montgomery Wards it is the mossberg 800a
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.
I owned a 1967 Western Field Tent trailer and the one I owned was manufactured by Ajax Mfg or Welding in Iowa. Good luck in your seatch.
Western Field 48A was made for Montgomery Wards by Mossberg. The model 48A is a Mossberg 45B .22 caliber Long Rifle
Montgomery Wards
The Western Field SB30A is a version of the Savage Model 520 as made for Montgomery Wards. In typical used condition, about $150. sales@countrygunsmith.net
No published sn data.The western field model M550ar was made by the firm Mossberg and sons for Montgomery Wards(Western Field) The Mossberg model 500AB is the same shotgun.this shotgun was made from 1962-1998.By being a wards Western Field we may be able to say that the time frame will be between 1962-1985 when Montgomery wards went out of business.
Several manufacturers made Western Field shotguns for Montgomery Wards. You would have to identify the exact model.
I have a 16 gauge double barrel for sale.