How much is a john manton son and coe doublebarrel shot gun worth?

Answer 1

John Manton guns were at the top of the industry in quality , manufactured in London and their popularity for quality them a target for forgery. Other Countries made them by the thousands, Manton and company is a forgery and any without serial # on every piece were also forged. Check your piece with a professional, that's the only way to determine value.