Add to Favorite Sellers. Bernie Williams New York Yankees Autographed Black Louisville Slugger Bat – Fanatics Authentic Certified. Bernie Williams New York Yankees Autographed Black Louisville Slugger Bat. Due to quantity levels, we do at times list a stock image of the product. This is done to standardize and expedite the listing process and only applies for merchandise that is comparably identical. Major League Baseball Authentication, Fanatics Authentic.