Help with Unit Mark
 

Asked about an Imperial unit mark on the grip of a 1915 DWM. Any help would be sincerely appreciated.
JNF.R.60K.6.

Infanterie-Regiment, Kompagnie 60, Waffen 6 (S/N 4413d)
(Jeff Noll, The Imperial German Regimental Marking, p 51)

Sorry but an Infantry Regiment has 12 Companies and a possible MG Company. More possible Inf. Reg. 60, 6. Company

On page 63 of Jeff Noll's Addendum to "The Imperial German Regimental Marking" is a 1915 Luger serial number 4413d with the identical unit marking.

He translates it as "Infantry Regiment 60, Company 6".