Bit of a mystery this Louisville Slugger S2 "EXPERIMENTAL" Phillies bat (33-1/2", heavily used) with a knob notation of "H&B / 25 / EXP." It's certainly team-issued and certainly rare. Accompanied by a 1995 Cooperstown Bat Company "Michael Jack Schmidt 548" commemorative bat (NM) with Schmidt's gold-Sharpie "10" signature and "HOF 95" inscription. Auction LOA from JSA.