army inspectors Mauser Waffenamt
looks like a pre "black widow" P08, no straw trigger and a dull blueing
Waffenampts Every factory had different ones and multiples. The dirty birds and crooked crosses look correct. Goofle search for Luger P.08 waffenampts by number and you'll find the answers.
....so where do you find my reply to OP being not accurate?
"eagle over 655" was the army (not commercial) Waffenamt for all P08 made by Mauser with S/42, 42 or byf marked on slide, models manuf btw 1935-1941
Starting with 1942 the markings were done with "eagle over 135" for the well known P08 "black widow" models...(actually named by an American Luger collector, Ralph Shattuck)



























