This helmet was used by Walter M. "Wally Schirra" during training sessions prior to the Sigma 7 mission in October, 1962.
The helmet, which was identical to the one used during the mission, was constructed of fiberglass and epoxy resin and was molded to fit directly into the neck bearing disconnect. A Plexiglas visor, capable of being raised for access, was attached with pivots, and when lowered into pressure sealing position, it locked in place with a latch. Communication devices with suede-covered ear pads were incorporated into the helmet.
Transferred to NASM from NASA in 1975.