Set of USM1 helmet shells comprising five metal shells with front snap fasteners and fixed trigger guards. A trigger guard is missing from one of the shells. Chinstraps are missing. One shell has two white paint circles, probably added by children. Another hull has a hole in it, having been turned into a flower pot. A high-pressure composite liner is attached with illegible markings and a missing cap. All parts show cracks, perforations and marked oxidation. Some wear and oxidation to be noted. condition II+. Set of USM1 helmet shells including five metal shells with front seam closure and fixed loops. One loop is missing on one of the shells. The chinstraps are absent. One shell features two white circles painted, probably added by children. Another shell is pierced and has been converted into a flower pot. A highpressure composite material liner with illegible markings and missing liner cap is included. All pieces show cracks, perforations, and significant oxidation. Note some wear and oxidation on the items. Condition II+.