There is but one signed M116 Sporting Life card that has been authenticated by PSA/DNA, and it is this one, featuring Larry Doyle.  One of the true stars of the early 20th Century, Doyle was the National League's outstanding second baseman during the 1910s.  He was awarded the 1912 Chalmers Award as the league's best player, and won the 1915 batting title with a .320 average.  Doyle lived into the 1970s and was a willing signer for all who asked, but based on the fact that just one example of his M116 card has been assessed by PSA/DNA, few collectors appear to have had the foresight to ask him to sign a Sporting Life card.  Exceptional presentation.