That is a "faschinenmesser", or "Fascine knife", and is essentially a Prussian infantry machete, primarily used as a fortification building and brush clearing tool, but it could also be used as a close quarters defense sword.
All of the marks on the guard and scabbard throat piece represent regimental inventory markings. The faschienenmesser and scabbard are not original to each other, as shown by the disparate markings.
The "base" model is the M1845, but the handle grooves would indicate that it is what is the most frequently encountered version, referred to as an M1864. Many consider it to be the last Imperial Prussian version. It could have been made any time between 1864 and the end of the Prussian Empire, around 1919. The manufacturer's mark could narrow the time frame.
The manufacturer is most likely stamped on the blade's ricasso, although very occasionally it is somewhere on the guard.