W.Collath double gun 12 ga, SN 18273
https://www.onlinehuntingauctions.com/item.aspx?i=50090257&mobile=0

W.Collath Drilling C.3 + 9,3 (x65R ?), SN 14134
https://www.cheshiregunroom.com/w-collath-combination-drilling-wittener-excelsior

W.Collath Söhne o/u 14 ga( C.3) + 8x58R, SN 20126,
https://live.amoskeagauction.com/lot-det...Combination-Gun

W.Collath Söhne o/u 16 ga +6,5x58R ; SN21368
https://www.egun.de/market/item.php?id=19937174

W.Collath Söhne,Drilling 16ga +8x57 IRS (oriinal IR), SN 21861
https://www.egun.de/market/item.php?id=19940647

W.Collath Söhne double rifle Drilling 16 ga +8x57IR + Drillings barrels 16 ga + 9,3x80R + 22 Hornet insert , SN 19603
https://www.egun.de/market/item.php?id=19932450

W.Collath Söhne 16 ga double gun
https://www.gunfinder.de/anzeigen/8664203?query=Collath

W. Collath double C3 + 11,15, SN 5199
https://live.amoskeagauction.com/lot-det...-Double-Shotgun

"serial #5199, 14 ga (Collath No. 3), 30 1/2” Bernard-style damascus barrels with perhaps fair bores that show some moderate pitting their full-length. The barrels are mostly an attractive mix of pewter gunmetal and gray-brown retaining most of their nice damascus pattern throughout showing a few small spots of minor oxidation staining and areas of fading. The barrel rib shows Collath address and the inside of the action bear Collath cartridge designation “C.3 / 11.15”, 3 being their nominal designation for 14 bore while the 11.15 would suggest a rifle cartridge perhaps indicating this gun originally came with a spare set of rifle barrels. Indeed the front trigger does have a set function. The action is a pleasant pewter gunmetal patina and shows wonderful Germanic oak leaf embellishments in full coverage with fine matted background shading and some lovely detailed game scenes of a stag right, rehbock left and portrait of a doe atop the action ahead of the safety. There is a monogram plate behind the safety as well that remains un-engraved. One of the upper tang screws is an old replacement, the fancy horn triggerguard rates near excellent and the lever is very fine showing a small crack at the rear. The checkered walnut buttstock and smooth forend remain in very good plus condition showing a little older added finish with some scattered light dings and handling marks, the right rear of the forend with a hairline 1 3/4” crack. The buttstock shows some subtle grain figure, length-of-pull to the smooth rosewood buttplate is 13 3/4” and there is a left-side Germanic cheekpiece. The barrels lock up well and the sling swivels are intact. The front trigger does not seem to fire correctly though it does still set and the rear trigger seems to function normally. A nice Collath double with some fine engraving."

never seen before , double barrel needle fire pistol by Teschner&Co, before 1875
10mm caliber

https://auctionet.com/de/4066740-doppell...-19-jahrhundert