Here's a Wurttemburg Infantry Officer Helmet with storage case that I picked up around 8-years ago.
The mercury fire gilding is really nice on this helmet. Looks like some insects had fun with the green and red lining on the underside of the visors.
Helmet would have been worn by an officer from one of the following Infantry Regiments: 120, 121, 122, 124, 125, 126, 127, or 180.
I look forward to your comments.