50-200 USD
Maybe a collector will have some information.
worth on Mossberg and sons model 146 b-a with m4d scope 22 cal.
about $100
35 years old
205
model 151 k with scope
Mossberg and sons made your Western field model 15K.The Mossberg model 80,or the model 83 both apply to your model 15K shotgun.
50-175 dollars
50-125 USD
Depending on condition, between $100 and $150.
Mossberg and sons is the manufacturer of your western field model M550ABD,shotgun.The Mossberg model 500 is the same shotgun.