Brown service kepi. A so-called "Schaftmütze". This cap was also worn by NSFK and SA troops in a slightly different style. 

Brown service cap with black backing. Grommets from aluminum.
Chin strap. In place. Including both buttons, however, one looks replaced. 
Button: Aluminum. Correct NSKK pattern. 

Cap badge: Machine-woven. Officer's pattern. Re-attached by hand after promotion period time.
A leader's cord has been privately added as well.
Lining: Orange color linen. Water-resistant.
Sweat-band: Minor signs of wear. Soft
Tag: Period time attached RZM tag "Tuchmütze"

No moth damage. Inner stabilisation band is broken.