Boston Red Sox Carl Yaz Yastrzemski Game Worn Used 1974 Signed Jersey Mears 10. Full MEARS LOA Grading a Perfect 10, Jersey. HOFer and Bostons Red Sox favorite, Carl Yaz Yastrzemski game worn 1874 home jersey. This is a 100% authenticate jersey worn by Yaz in the 1974 season. Do not miss your chance to own this piece of Red Sox and Baseball history! For questions on this item, please call Probstein123 at 973 747 6304. Please wait for the invoice…. The free listing tool. The item “Boston Red Sox Carl Yaz Yastrzemski Game Worn Used 1974 Signed Jersey Mears 10″ is in sale since Tuesday, June 27, 2017. This item is in the category “Sports Mem, Cards & Fan Shop\Game Used Memorabilia\Baseball-MLB\Jerseys”. The seller is “probstein123″ and is located in Passaic, New Jersey. This item can be shipped to United States.