Jon...lee is correct re/the buttonhole ribbon, I like the photographs...but sadly the field cap (Kratchen) is a repro, and unfortunatly not a good one...they were never lined in such a way, i.e. silk with a leather sweatband, the cockades are mismatched, the Reich being a "pronged" back NCO type and the "Prussian" a double ringed Officer type......they would never be worn together !....heres a couple of genuine ones for comparison, the first a "Wurttemburg" issued example (photo done in a rush !) with sewn on cockades, note the lining, canvas type material hand stitched in ! and the on an original there is no piping around the "red" band.
Prost ! Steve.