From the May 21st Amoskeag Auction Company Catalog:
1146.MAYNARD MODEL 1873/1882 SPARE BARREL BY AO NIEDNER OF MICHIGAN (un-numbered), .376" bore tapering to .365 at the muzzle (.011" choke) with .425" diameter base, nearly straight-wall case (may taper) about 2.155" long with .520" diameter rim. 24" round barrel with a bright excellent smoothbore. Metal surfaces retain about 70% fading original plum blue finish with the loss due to honest even fading and light handling marks with a spot or two of very light surface oxidation. The top of the barrel is maker marked "A.O.Niedner/Dowagiac Mich" and the barrel features an ivory bead front sight mounted in a dovetail and a Lyman style midrib ivory bead. The coarsely checkered American walnut forearm with scant Schnabel tip rates excellent with much original varnish. One would suspect a 38-55 would drop right in, it is very close. A very nice barrel overall by a very well-respected and talented old-time gunsmith.
