[mrmopar]

I can't tell on your ball, but one very common sign of a clubhouse ball from that era was the Robinson, Campy, Erskine autographs in order. I see Robinson and Campy, but can't tell if Erskine is under Campy. These were reportedly done by the clubhouse/bat boy, Charlie DiGiovanna, who became a master at signing many of the players names for those team balls. Sometimes a few of the signatures are real, mixed with Charlie's renditions. If you are looking to sell the ball, you'd almost certainly want an "expert" to render an opinion on it and if you are buying one, definitely would want someone's stamp of approval before dropping large amounts of cash for a 50s era Dodgers ball.

Google his name and read up and that might give you everything you'll need to proceed.