1986 Detroit Tigers Team Signed American League Baseball With JSA COA 17 signed. The following authgraphs have been authenticated by JSA James Spence Authentication. For a team signed ball like this one, JSA takes a bunch of pictures and then compare them to the huge database of autographs.The key signatures on this baseball are K. Z32258 is the certificate number. This item is in the category "Sports Mem, Cards & Fan Shop\Autographs-Original\Baseball-MLB\Balls". The seller is "forevercruisin" and is located in this country: US. This item can be shipped to United States.