This sph4 helicopter helmet was manufactured in 1969. It is very hard to see or get picture of the date behind the styrofoam. It has the NVG mount that may have been added and modified later.
As with most helicopter and flight helmets this age, the visor tracks are a little stiff and need TLC cleaning or adjustment. The item "Gentex SPH-4 Helicopter Flight Helmet with NVG mount 1969" is in sale since Wednesday, April 29, 2020. This item is in the category "eBay Motors\Parts & Accessories\Aviation Parts & Accessories\Pilot Gear".
The seller is "buyarmynavy" and is located in Fort Worth, Texas. This item can be shipped to United States, Canada, United Kingdom, Australia, Mexico, Germany, Japan, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.