Depends on which model/manufacturer.
how old is a western field 12 gage shotgun browning patend 38535
Where can I buy a magazine for a western field M149 bolt action
Mossberg in the 1970s
Western field 12 gauge single shot shotgun serial #82719 x G...age and value/
it is a Mossberg
Mossberg made that shotgun for Montgomery Ward's Western Field fun line. It was the Model 185 in Mossberg shotgun line.
Mossberg and sons is the manufacturer of your western field model M550ABD,shotgun.The Mossberg model 500 is the same shotgun.
200.00 to 300.00 US