U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.

U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.

U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.

U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.

U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.

U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.

U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.

U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.

U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.

U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.

U.S. Army, M1 steel helmet with pattern 1964 liner and Mitchell cover.