There is one for each barrel. The back one is for the left hand barrel and the front is for the right hand barrel.
50-100 or so
The front trigger opened the breach.
over 9000!
50-100 USD
Library, gun shows, Spain.
0-250 USD depending on condition.
Blue Book of Gun Values will help.
Blue Book of Gun Values
It would top out at $250 as a mantle decoration. Unless you mean a Parker Brothers shotgun. Then it could be several thousand dollars.
I have The New England Double barrel shotgun with 32 inch barrel single trigger and im looking for the same thing.
The back one is for the left hand barrel and the front is for the right hand barrel.
50-150 USD or so