USAAF M5 Anti-Flak helmet named Colonel Colins, 72 Engineer

USAAF M5 Anti-Flak helmet named A.G. Colins, 72 Engineer Batalion. This is a nice USAAF M5 helmet which was used by a army engineer colonel, possibly even worn post world war two. Nice example named, with three decals. Hard to find and a nice base for further research!