US WWII P1937 'Plastic' USMC Enlisted Cap & Right Collar Insignia

Original era manufacture. Both are of a composition material, either Bakelite, or Tenite, produced by Union Carbide and Eastman Kodak respectively, during the mid-war years due to a scarcity of strategic materials. See page 262 'Eagle, Globe, and Anchor Emblem: 1868-1963 Pictorial Guide' by Timothy F. Klie.