Salome, does not look to be Imperial German...better photographs needed, try to pack out the cap so all of it can be seen...
Prost ! Steve.
"The German Army is the perfectly adapted, perfectly running Machine. The difference is that the Germans are organised with a view to War...with the cold, hard, practical and business-like purpose of winning victories."
G.W. Steevens - The Daily Mail (1897)
Could possibly be swiss going by the cross on the buttons
I agree with Steve: It's not German. (Apart from that, I cannot make a positive ID. Swiss could be right; but this is outside my area of interest.)