Depending on how quick you want to do it you might try writing to the tigers, and some of their minor league teams. Probably a dead end, but it never hurts to ask. And if something does come through it would be very cool.
Unfortunately I offloaded the few borderline bats I had a couple years ago. A couple bats I was pretty sure were game bats but the names were totally unfindable. The one with just the name "Henry" I gave to my nephew. It had his name on it after all.
The used sporting goods shops are often a good source. They may be a bit pricy since they won't have the cracked ones, but in a minor league town there's usually a few maybes.
Steve B