Leo the Lip was coming off a World Series appearance (courtesy of Bobby Thomson) in 1951 that saw the Giants lose to the crosstown Yankees, so this picture must have been taken at a happier time.  The PSA/DNA AUTHENTIC designation covers the autograph, and the card itself has a nice look to it, with a great image of Durocher.  His signature in black felt tip, while faded, is a very interesting one, with the hyper-extended D kicking off his last name with a Hall of Fame-worthy flourish.