Very early DWM strikers are different from later ones.
Most are identical from ca. 1904 to 1942; except for "fluting"- which the inventor claimed was to allow for dirt built up and to still function, not for any kind of pressure relief- though many believe this and continue to perpetuate the story.
Swiss designed/produced strikers for later Swiss luger models are different.
Differences are in the cocking tab on the striker projection which is moved by the lever arm on the middle toggle.
03man - Don Voigt
Luger student and collector
Looking for DWM mil.side plates- 14,17,45
Art. luger rear sight slide # 03