I have gone through all the threads in both Forums,looked at most large dealers for 1916 DWM and !916 Erfurts. Found a few but most did not have pictures, serial numbers or sear bar info.
With very limited information I can only conclude that:

1. Out of 90000 Erfurts produced in 1916 at least 84698 were made with relieved sear bars.

2. Out of 140000 1916 DWM's produced at least 135052 were with relieved sear bars. This unfortunately is based on one 1916
DWM serial #6948 with relieved sear bar. On Simpsons site there is a 1916 DWM SN 21XX with relieved sear bar but it has been restored so?

Would still like data on 1916 DWM's and 1916 Erfurts. Thanks Bill

He Bill. I have a RC 1916 (I think Erfurt by all the imperial stampings compared to DWM that dont have them in the same places). Serial number 8034j. All matching on the bottom portion of the gun, except sear bar which has the SN marked out. Toggle is totally different being a S/42 toggle. But this luger has the relieved safety.

Attachment 29913

Attachment 29914

Im assuming a Erfurt luger. Let me know if its not.

The bottom portion is Erfurt

DWM 1916 Lugers UnRelieved and Relieved Sear Bars.
 

These are both 1916 DWM Lugers. The first is s/n 2142a and has an un-relieved sear bar. The second is 5050n and has a relieved sear bar. Both are numbered in the same location.

Marc

Skeeter, I have both releived and unrelieved Erfurt Imperial marked sear bars, but unfortunately no #34. TH

I have 1916 Erfurt 353 c, sear bar is relieved......