double rifle W. Collath Söhne 9.3x74R, SN 21512
http://egun.de/market/item.php?id=7606020

and

W. COLLATH 12-BORE 'C. 12' TESCHNER-COLLATH PATENT SLIDE AND TILT UNDERLEVER HAMMERLESS NON-EJECTOR, serial no. 16472, 29 1/2in. black powder only reproved damascus barrels (some pits), file-cut matt rib, 2 1/2in. chambers, bored approx. 1/2 and full choke, right wall at 19, Collath patent action, horn and steel lefaucheux-type forward-facing underlever, fixed integral fore-end, manual 'wingnut' safety, horn triggerguard, border and acanthus scroll engraving, 13 1/4in. stock including cheekpiece and horn buttplate,sling swivels, weight 6lb. 3oz.

https://auctions.holtsauctioneers.com/as...2&saletype=