'Ear Wardens, Type V-51R' by the Mine Safety Applicances Company, Pittsburgh. Rubber earplugs contained within a plastic 'box' with a pocket clip integral to the lid. These were made in three sizes. Issued to/used by AAF aircrews. We have three boxed pairs available. Priced individually. Storage marking/deposits but these can easily be wiped off. Unused and in good overall condition. Stock code M19281.