Test #2 Answers

I agree in part with the official answer and with Steve. This mark is indeed found in the TD lever well of the US test and other M1900 lugers. Therefore, it is not a US military added "flaming Bomb" Ordnance acceptance marking. It is rather just the assigned mark of a DWM inspector during this period. If you look closely, this marking is composed of a semi-circle atop a circle. This is one method of making the astrological symbol for Taurus the Bull (of which I am one). Both DWM and Mauser reused previously used acceptance dies (B in a circle from M06 Brazilian contract, Triangle in circle from M06 Portugese, etc) On LATER production pistols & rifles, as inspector identification, to wit, the triangle in circle on the rear frame of some M1910/14 Mauser 25acp pistols and B in circle on some 98K rifles. I've never seen this theory in print, but check it out yourself. Tom