Daryl nailed it. I have had several English dealers tell me they would strip the case of accessories and the label then pitch the case when it was the lower to medium priced guns.
A period case weighs nearly twice the average 6-8 lb gun. The accessories were often lost. If you watch the auctions at Holts/Bonhams, you see some silly prices paid for faceted glass oil bottles or assortments of shell extractors and screws.
I'd expect $100 for a good glass oil bottle with no name, $50-75 for metal with no name.
Vintage turn screws, $100 each or more if nice. Stick with repos.
Cleaning rods depend on the material, the big ebony ones fetch the highest. I haven't seen any of them for a while. Small gauge rods and accessories will be twice any 12 gauge stuff.
Jags/brushes and pull throughs, about $25 each. The UK cleaning rods use a different thread than the US stuff. If you buy a vintage rod, you'd better shop for the bits while the rod is in your hand.
Cases are a whole different issue. They were luggage. Some got used up. Often the gun was stored in a safe and the case went to the unheated attic or damp basement. Time has taken it's toll. The basic case styles are canvas covered/canvas hinged ($100-300), leather covered oak frame/leather hinge ($100-400), exposed oak frame/leather hinged, brass cornered ($400-$800) and the much sought after exposed oak and leather with brass hinges and corners ($500-$2000). Add a little more for a nice label, and even more if it is a pair case.
Replacement brass corners are $30 each. A brass cornered case has 8 corners so better cost >$250 or someone is paying you to take it.
Don Amos watches the auctions and realized prices to continually refine his value spreadsheet. There just aren't enough vintage accessories to make a similar comparison.
Joe
