I'm looking at a pre-WWI (serial number in the 13,xxx range) Joseph Lang, which has a replacement set of barrels manufactured between 1925 and 1954 according to the proof marks. No indication who did the barrels, but they have Birmingham proofs. The Joseph Lang name remains on the rib. Bores measure 0.729" and the minimum wall thicknesses are in the 0.030s. Balance point on the gun is reported as being approximately 3/8" forward of the hinge pin.

I'd have the gun inspected by a qualified gunsmith (probably Abe Chaber, if he's available), but I was wondering how the replacement barrels might impact the value of the gun. Is this something to steer clear of or is a new set of barrels on a gun that old an asset.

Thanks for your insight.