This pressure helmet was substituted by NASA for the helmet that was worn by astronaut William Pogue on the Skylab 4 mission in November, 1973. The original helmet was retained by NASA for testing.
This helmet is identical to the flown mission helmet, which 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.
There were two configurations used on Apollo suits which were not interchangable, the earlier configuration was anodized blue, with the later configuration being anodized red.
Transferred to the National Air and Space Museum by NASA in 1976.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.