Patrick, You simply must show the RR (right receiver acceptance) on this rifle, - although there is a e-block reported for Danzg/06, it is clearly a Berlin build (due to it's loneliness this high though the RR is not shown the fireproof attributes it to a Berlin firm, probably Spandau, but DWM or build remains possibilities) the current high is a rather low b-block and this would represent a significant jump over 10,000 rifles... the numerical style and especially FP identifies this as Danzig made, so this would be a rifle of considerable research value (with what you show, an original BC which is nearly as impossible to trend...)