New England’s Biggest Free Admission Card Show, Emerald Square Mall, North Attleboro. Friday, July 17 from 10 to 8:30, Saturday, July 18 from 10 to 7:30 and Sunday, July 19 from 10 to 5. Buy-Sell-Trade old and new sports cards, autographs, sports memorabilia, Pokemon and other TCG cards & collectibles. Autograph Guests that Friday at 6 pm: Football Hall of Famer Adam Vinatieri.Over 300 Vendor Tables. Presented by Cardboard Promotions & Hometown Collectibles