For reference purposes I present this traffic police visor cap dated 1939. It is unlined, and a true summer white top visor. The name stamped inside the white lacquered sweatband suggests that it never had a lining not sweat shield. I believe the rivet behind the eagle was the attachment for the front stiffener which has since torn off.

frontC.jpg (48.42 KB, 25 downloads)
Last edited by W.Unland; 08/29/2015 05:35 AM.