Former “Dawson’s Creek” star James Van Der Beek is putting some of his celebrity artifacts up for auction next month as he navigates a cancer diagnosis. The 48-year-old actor and father of six shared last November that he was diagnosed with stage 3 colorectal cancer . On Wednesday, he announced that he will be selling some cherished items he’s saved over the years in order to pay for medical expenses. One of the pieces Van Der Beek is selling in Propstore’s Winter Entertainment Memorabilia Live