WW2 Era Triplex Lens Flying/Driving Goggles

A good early pair of goggles which have triplex lenses these being marked with an appropriate sticker, they are quite basic in design with an adjustable strap, no elastic, leather framing around the lenses and may have had padding around the inside of the lenses. They come in aged condition with rust to the metalware, spots on the straps and the lenses have 'ripples' through them. They measure 7.5 inches wide.