Third Reich Luftwaffe Visor cap of an enlisted/NCO of a Signals unit

Third Reich Luftwaffe Visor cap of an enlisted/NCO of a Signals unit (Luftnachrichtentruppe). The cap body is constructed of blue wool, with the black mohair cap band unique to the Luftwaffe. The waffenfarbe (weapons color) piping of the cap is brown. The winged wreath and eagle are stamped aluminum, the patent leather strap is indicative of enlisted grade. The composition black peak has the green underside with a checkered texture.
The interior is lined with light gold silk, with the celluloid sweat shield sporting the maker logo of HPC (Hermann Potthoff of Coesfeld); this maker’s full name never appears on visor caps, just the initials. Frischluft is the HPC developed and patented (DRGM #1419757) ventilation system, and was used under license by other Third Reich visor cap contractors. (The system employed multiple holes behind the wreath and cockade, similar to the Erel patent using a vent in the center of the cockade to allow air flow throughout the interior of the cap.)
Other than a separation in the leather sweatband, this visor cap is in near-perfect condition showing light use and wear.