i know your consolidated knowledge is comprehensive, reading your forum is always diverting.
last days i got some packages of “11mm mannlicher” ammunition in original “remingtion/dupont” boxes.
searching your forum i found an old thread about, i think 9mm about mannlicher, with “kleanbore labeld boxes” and the discussion of an production timeframe.
i will show my purchasing and ask you honored collectors to help me dating the boxes.
also asking about an production timeframe for this ammo, maybe someone can show an old catalog page
regards from austria