dead stock= new old stock. a jersey shape, this at the time was made for fans/supporters of the team,only had team colors,not names or players or teams as modern jerseys fabric is 60% nylon 40% cotton,a hopsack type of weave, knitted material. made by empire in usa and also union made as stated on label.i guess is 60's could be earlier.not an official licensed nfl item. size is marked 38-40,i call medium. arm pit to arm pit =20.5" slight stretch,back of neck to bottom of top =33". stripes go all the way around both arms, silk screened and are 4.5" high. great nostalgic item, great time to have!! be prepared for this season and forward. have no idea of the # but on front and back.