Here is another photo from "Wild und Hund " taken about 1875. It shows Heinrich XI, Fürst (=Prince) Pless with a single shot "Fürst Pless" stalking rifle.

Not every gun made to Rudolph Berger's coil spring – striker lock design are "Fürst Pless Guns". Berger's needle fire guns are not! Berger combined Gastinne's slide and tilt breech action (some years later used by Teschner-Collath too) with Chassepot's sealing cushions and his own striker locks in his needlefire guns. After the centerfire cartridges came into general use, Berger in Koethen and other gunmakers combined the coil spring striker locks with more conventional break open breech designs , as with the centerfire cartridge case the gas sealing features of Berger's needlefire design were not needed any more. I have seen such guns with Berger's locks combined with both Roux type and Lefaucheux double grip actions. These centerfire guns with Berger's locks were called the "Fürst Pless Gewehre".