Does the card say anywhere that the bat was game used by Hack? All it says on the front of the card, is that it's an "authentic knob"... and even that is incorrect, It's obviously a barrel end.

I think the only reason a card company would advertise a knob, and provide a barrel end, is because there were markings on the knob that showed this bat was obviously not used by Hack.. Either inch marks, or other makers marks.

If I'm reading this correctly Troy provided a list of all authenticated game used, Hack bats. So, I'm putting my money on this being a batrite with the patent marks on the knob, or a spalidng with the trademark on the knob which recieved an "authentic" grade from Mears, or some index bat.