question about DWM Luger

[luger76]

Can someone tell me more about a DWM with serial 4985?
(what year, how many were made in that series, possible worth...)

I don't have it so I can't post pictures, but it's in very good condition, DWM mark on the toggle, not dated, 4'' barrel, 9x19mm and has all matching parts except the magazine. There are no letters after the serial number.