A small CDV made by the photographer of the court: Hermestroff in Metz, who even had two locations there.
On scene is an officer of the Metzer Infanterie-Regt. Nr.98 wearing a double breasted tunic, a 'überrock' in this case. The fancy shoulder boards, as was common for officers of this stature, have metallic number 98 attached. Two metallic stars can also be seen, indicating the rank of Hauptmann. (Thanks Glenn!) Which is equivalent to Captain in other armies and a Rittmeister in German Cavalry units.
The CDV provides an excellent view of a (private purchase) Prussian M95 Pickelhaube with brass chinscales and a gilt 'line eagle' as wappen. Note the M1871 pattern rounded Perling at the bottom of the spike and the large 'officer sized' kokarde.