50-200 depending on specifics
I'm not sure about this but i remember seeing somewhere on the internet the value was from $75 to $125
I got mine from a pawn shop for $140 although it was on sale.
That question cannot be answered unless the model number of your shotgun is included in your question.
100-400 USD depending on condition
Mossberg
Made ABOUT 1903. Value will be based HEAVILY on condition. You will need a "hands-on" appraisal for an accurate value.
50-150
The SKB M-7900 is a pump shotgun not a semi-auto.
Plese check your information and re-ask the question. A Western Field model 80 is a copy of the Savage .22 pump rifle known as the Savage model 29. Western Field was sold through Montgomery Wards and the WF name was put on hundreds of different models from many different well know arms makers.
100-400 USD
10-125 USD or so