RAF Hercules Crew Headphones 1960s - 70s

A very good condition pair of Amplilite/Amplivox Crew Headphones 99-970/3000 coded,  with cord isolation switch marked "Amplivox Wembley England", and Amplilite on the ear shrouds. All in good, if untested, condition though the rubber shroud on the jack plug shows some perishing. A very unusual find from the Cold War era, and the sort of issued equipment you would find being worn by Crew Chiefs, and other personnel on board RAF transport of the era, like the C-130 Hercules and C-47 Chinook.