Original German WWII M31 Zinc Inner Liner Helmet Spring Band Size 56

Original German WWII M31 Zinc Inner Liner Helmet Spring Band Size 56This authentic spring band is in good usable condition. It fits in a size 64 outer liner band. There is visible rust, but is still usable. The inner and outer bands are connected by five steel leaf springs. These springs allow the liner system to provide some flexibility and absorb impact.