Vintage Vietnam War era US Army M1 combat helmet with liner

Vintage military-style steel helmet in olive green. Sturdy construction with textured paint finish. Great collectors piece or display item. The text on the headband appears to read "GROUND TROOP" followed by a serial number, indicating it is an infantry-type suspension system. These liners were manufactured by various companies, such as Steinberg Brothers, and the liner itself often features a date stamp (e.g., 1968) visible on the shell This item is a historical collectible related to US military history, particularly the Cold War and Vietnam War periods