had it before but find now better pics and its imho worth to safe them
the Heinrich Barella SN 1539 with 17,0mm whats probably the caliber in mm
http://www.gun-photos.info/gunphotos?photoid=65451&iid=324619&aid=57

and thats also surprising me: A G.Teschner single shot rifle
http://www.gun-photos.info/gunphotos?photoid=49416&iid=255610&aid=49
"needle fire" and in this case probably YES
the only rational reason why Teschner would build a "Berger" gun and not using his own action must be it shots the Berger paper cartridge with primer in the base like Zimmer is writing in his book " Berger is using the Collath shotgun cartridge and Collath use the Berger paper cartridge (sometimes)"

"Engraved Needle Fire Single Shot Rifle
Sold On 4/30/2010 For $2,587.50
The top of the barrel is gold inlaid "G. TRESCHNER IN FRANKFURT A/O. PATENT." and the top of the frame at the breech is engraved "WMA, SCHEK / IN / WIEN". The barrel is equipped with a front blade sight (filed down) and three leaf (two folding) rear sight. There is a lever mounted on the bottom of the frame that when rotated slides the barrel forward and then the barrel tips down for loading and unloading. The breech end of the barrel has a silver inlaid band and there is a wooded ramrod with brass trumpet head mounted on the underside and secured by two iron pipes. The frame, action, under lever, forend cap and trigger guard are engraved floral scroll and punch dot designs with the addition of animal scenes in an oval panel on each side of the frame and on the trigger guard. There is a horn extension behind the trigger guard, there are double set triggers and it is mounted with a smooth forearm and skip line checkered straight grip stock with a cheekpiece and a hard rubber buttplate. Approximately 60 small brass tacks have been added to the left side of the stock in simple straight line patterns."