This pressure helmet was made for and worn by astronaut Michael Collins, Command Module Pilot of the Apollo 11 mission to the moon in July 1966.The Apollo pressure helmet was a transparent bubble designed to attach to the spacesuit neck ring. It was constructed of a polycarbonate shell with a red anodized aluminum neck ring, a feed port, a vent pad and duct assembly attached to the rear and a valsalva device attached to the inner ring.Transferred to NASM from NASA - Manned Spacecraft Center in 1971.