just in auction in czechia http://aukro.cz/jehlovka-s-posuvnymi-hlavnemi-syst-collath-i6722515048.html

"16 ga" is it a real needle fire gun as pic no. 3 shows very clearly

thinking this must be around 1870 when the design of this action changed into the "Fürst Pless" gun but it still use a cartridge with needle priming in the base of a paper cartridge

two pics of another gun I was not able to get more informations about. its the original Berger needle gun design with "Steacke Lanuesdter" what could be a netherlandic maybe
http://doublegunshop.com/forums/ubbthrea...true#Post464959