USAAF 'used' earplugs, boxed

'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.