OK, I am confused. (a natural state for me)
I had looked at the proof mark list here:
http://www.lugerforum.com/lugermarkings/proof-1.html
and noted that Proof #2 -BUG with 118/35- was seen on 9mm guns:
"2. German commercial barrel proof. Found (with proof 3) on some 9 m/m 1902 thru 1908"
I had "assumed" that meant it was a 9mm barrel/frame when it left the factory as this gun has both proof 2 and 3 as listed on that page.
Thanks for the tip on the pencil. My daughters 4" #2 pencil drops all the way through to the chamber with the toggle locked back in the open position. Great tip to know.
Does this mean this is a 9mm Luger?