A bolt action shotgun in 12 gauge.
No such animal......
A utility bolt action 12 gauge will bring from $50 to $125, depending on condition, at most auctions.
Try e-gunparts.com
50-150
Japan
Would need to know which model.
50-125 usd
According to their website: 1998
Best left to a gunsmith.
50-160
50-200 USD