do you mind if I start a new endless archive thread? working a little bit about the Dreyse sporting gun and allways come to Berger/Fürst Pless guns because people misinterpret them as Dreyse guns. thats because they know still less about them than about Dreyse.
just a few guns now and I will bring historical material at a later date.

16/65 by A.Berger/Magdeburg
http://www.naturabuy.fr/Juxtapose-A-Berg...em-2567690.html

17mm (16 ga ?)could be made for a needle fire shotgun cartridge
"Fürst Pless Gun" made by Victor Colette/Liege
https://www.liveauctioneers.com/item/42531373_a-rare-breech-loading-dreyse-type-double-barrelled-gun

"
Description

dating: third quarter of the 19th Century
provenance: Belgium
Smooth, round, juxtaposed, 17 mm cal. barrels, with rib signed "VICTOR COLLETTE LIEGE", foresight; needle bolt; wooden butt and fore-end with checkered neck and palm rest, iron mounts engraved with floral motifs, on the lower part the lever to open the barrels. Parts with superficial rust. To be cleaned.

dimensions: length 19 cm."

J. Goehler/Berlin 16ga and 11,15x60R Mauser combination gun
again a gun needing a restoration
http://bazar.hunting-shop.cz/inzerat/54483-obojetnice-system-dreyse/

again not a Dreyse gun, this Fürst Pless gun, maybe jus a 12 ga with steel barrels and german proof looks very late, maybe 1895 -1900

http://www.gunbroker.com/Auction/ViewItem.aspx?Item=526913591