mark.as most german rifles, these type mausers have much more time into them than most british rifles ,nice find. what is the LOP before you take that butt off? might end up too short ,trapdoor butts are ok if you have the balls to drill a hole into the stock!!usually horn type butts are found unmarked (no makers name) at gun shows wait till you find the right one , the pad may have been put there because the LOP was too short for the previous owner , ....paul