Pre war green rubber Stirnlampe or headlight in storage pouch by ROKA 1939

Excellent rubber pattern Stirnlampe or headlight in its original pouch in very good, used condition. The rubber pattern is the most frequently encountered pattern but this example is executed in green(!) coloured rubber which seems to be quite rare! The head band which is still flexible and the cable are both in good and most likely working condition. The normally bakelite battery case is missing and has most likely been periodically changed for a smaller battery case which is still on it now! The rubber part on the Stirnlampe or headlamp is nicely marked ROKA 1939 which indicates production by Robert Karst, Berlin in 1939. The headlamp or Stirnlampe comes in its original storage pouch which is virtually always missing and not available as a spare! The pouch itself is in great condition and nicely marked PW 40 and WaA 584 which indicates most likely a subcontractor who produced these storage pouches for ROKA. These headlight are hard to find, let alone executed in green rubber with the original storage pouch!