[perezfan]

In this particular case, the "clubhouse Ruth" is a Sinclair Contest Ball. It's a somewhat rare and desirable item on its own (even though it wasn't signed by the Babe). It is even rarer to see authentic Cobb and Speaker sigs on a ball like this. Why someone chose to add Pete Rose is simply beyond me, as it actually devalues the ball. A Ball with just Cobb, Speaker and the Sinclair Ruth would be worth lots more without Rose.

In most cases, "clubhouse" means that a locker room attendant or Bat Boy signed a team ball in the particular player's absence. This was somewhat common, but the clubhouse Ruth sigs you normally see are different from this example.

Hope this helps...