This is an INVESTMENT GRADE Mattingly rookie card... Please add 50 cents for each additional card you win. Please do not checkout until you receive the revised invoice. The item "1984 Donruss #248 Don Mattingly ROOKIE PSA 10 (Gem Mint) New York Yankees" is in sale since Sunday, May 15, 2016. This item is in the category "Sports Mem, Cards & Fan Shop\Cards\Baseball".The seller is "waynaybay_123" and is located in Pacifica, California. This item can be shipped to United States.