Depends on what is marked on the gun.
Probably turn of the century
The current Barrett Firearms does not make a double shotgun. Exactly how is your gun marked?
Exactly how is the shotgun marked (all markings), and double-check the serial number. firstname.lastname@example.org
suggest you contact: wellsfargohistory.com for shotgun history/value
The value of a London Fine Damascus 14 gauge double barrel shotgun marked JT Sang Ford depend on its condition. This gun in excellent condition is valued between 225.00 and 320.00 as of 2014.
Liege, Belgium Superior proof mark A smokeless powder proof
Try Numrich arms @ www.e-gunparts.com
It will be marked on the receiver/barrel.
It should be marked on the barrel or recieiver.
The barrel will be marked "Made in Belgium"
It will be marked on the barrel