This item was consigned by a former equipment manager for the Williamsport Crosscutters. They were the Phillies Single A affiliate while he was there. This bat has four signatures besides Whitt that we were not able to positively identify. Bat is stamped 5/21/12 on the knob. Whitt was a roving catching instructor in the Phillies organization for most of the 2010's. Due to the probability that authenticators will not have exemplars for minor leaguers, we are unable to offer our authenticity guarantee for an signature other than Whitt's.