Needing info about a side lever on a old german nitro proof steel, suhl,merkel/Funk style? drilling with cocker hammers,aged aprox. around 1900-1920?How rare is this and does this help or hurt the value?Rifle caliber 9.3x74r,16x16 shotgun.The one i saw has a lever on the left side and i think it cocks the rifle maybe,because there is also a regular top lever?can someone explain how it works?,do you press down and it engages the rifle like a selector?I have only seen one in a picture ,never actually held,so dont have a clue..Looks way cool..
also did some of the really big bore double rifles have these levers?Are they called ...side lever?... and the ones on bottom that open the action are called bottom lever?Does anyone have a picture of one?i cant find any info nowhere..I have seen a J.D.Dougalls Howdah double barrel 577 Pistol with cockers for hunting tigers with a little lever on the side for opening the action...i wish i had one of those

If i find a pic i will post it....I know some of you have seen this somewhere

Thanks in adva :