VIDEO : ?Pawn Stars? Richard Harrison Dead At 77

Richard Harrison, known as ?The Old Man? on History Channel?s ?Pawn Stars,? has died. His son, Rick Harrison, told TMZ that he passed away after a battle with Parkinson?s disease. He will be tremendously missed by our family, the team at Gold & Silver Pawn and his many fans the world over." Corey Harrison, Richard's grandson and "Pawn Star" co-star, posted a tribute on Instagram. He wasn?t just a grandfather, he was truly a best friend as well.