World War I-era M15 ‘Adrian’ helmet, with a metal comb affixed to the crown with four pins, and with the initials ‘RF’ (Republique Francaise) set above a crescent. The helmet features an intact seven-finger brown leather liner, mounted within the shell on bands of corrugated metal. The helmet is painted copper brown throughout. Lacking the leather chinstrap. Light scratching to the paint and minor oxidation, else very good. The Adrian is widely considered to be the first steel combat helmet in regular service in the modern era.