Can you help me please with identification this sidelever Hahndrilling? It is made in caliber 16/65 - 9,3 x 72R and 20/65 - 6,5 x 58R. There are names of the gunmakers on the top bars: Andreas August Ahl - Bonn and Eduard Kettner Köln. On the action is the mark [b]C.F.. This mark is also on the bottom of the barrel. I think it might be a brand of Christoph Funk. But what about the other marks on the barrels - circled in red in the pictures? [img]https://imgur.com/CrWFsJX[/img][img]https://imgur.com/svvghE8[/img][img]https://imgur.com/Zxcilzj[/img][img]https://imgur.com/bkWfWlY[/img][img]https://imgur.com/vKxrjBF[/img][img]https://imgur.com/D2jfYkV[/img]