Kaiserliche-Marine Seeoffizier Schirmmutze
 
 
Kaiserliche-Marine Seeoffizier Schirmmutze. The body is of a high quality doeskin wool, and constructed correctly for a naval cap with the stitched front visor. The course weave of the sweatband combined with a zinc chinstrap button indicates this is a wartime manufactured Schirmmütze. This Schirmmütze was worn by all commissioned Seeoffizier, from Leutnant Zur See to Admiral.
A close up of the superbly hand-embroidered officer's insignia of a Kaiser's crown above oakleaveswith Reich's Kokarde.

The insignia has darkened nicely with age and tarnish.

The insignia is sewn onto the body through the band, so the band cannot be completely removed, but it slips off the back and sides as is normal for Navy caps, as the black band was not sewn directy on the cap.
 
 
A side profile of this Kaiserliche-Marine Seeoffizier Schirmmutze example.
The leather chinstrap is of the correct pattern with slide on one side and a buckle on the other side.

The strap has become very brittle and delicate from age and could not be removed without breaking.
A close-up of the wartime zinc chinstrap button.

When purchased, the button would have been gilt.
The liner is silk with a stiff Alkor Ersatz-leather (coated cloth) sweatband which is perforated around the circumference with a herring bone pattern (<<<<) for an adjustment ribbon.
A close up of the herring bone pattern perforations cut into the sweatband for the adjustment ribbon.
A very nice photo of Kaiserliche Marine offizier wearing a similar Schirmmütze.