Signatures include jack ham, lavar arrington, dan connor, sean lee, greg buttle, mike mauti , dennis onkontz, shane conlan, andre collins,paul posluszny. a great full size brand new helmet autographed by ten penn state legends. linebacker u. authenticated by jsa with tamper-proof sticker and matching certificate. this is a limited editon of only 23 and is hand-numbered out of only 23 produced.