Their record is still there, currently owned by Griffin & Howe.
DWM's representative in US was not VL&D. Lugers were sold in US by another German, T...., I forgot his name. If it's a Luger, no VL&D record. If it's a Mauser pistol or rifle, you can find the some s/n in the following link. Looks like records before 1901 were lost, but a s/n circa 1905 should be no problem.
http://secure.griffinhowe.com/resear...al.cfm?make=32
If you pay them $50, they will mail you a copy of the page contains your gun. When it arrived to them, when it was sold, sold to whom.... It's interesting to read.