High standard
The value of a 12 gauge Sears and Roebuck single shot bolt action model 14 will vary depending on the condition. If the gun is in good condition, it could be worth $150-$200 dollars.
http://www.histandard.info/PDF/Sears%20Shotguns.pdf
Stevens
A Sears model 100.101 20 gauge single shot shotgun is worth between $150 and $400. The actual value depends on the actual condition of the weapon and the interested buyers.
http://www.histandard.info/PDF/Sears%20Shotguns.pdf
50 USD or so
Blue Book of Gun Values
Depends on model and condition. Typically $100-$150.
the model 583.16 is a j.c. Higgins "model 10" bolt action. sears has issued a volentary recall on them. at the time of the recall they were offering a $160 "finders fee" for the return of the bolt from the shotgun .
It depends on the the number of barrels, year, model, condition and serial number.
http://www.e-gunparts.com
It depends on the the number of barrels, year, model, condition and serial number.