> would you think about marking (having marked) the units with some type of embossing/counterstamping or a pindot-drillhole so your inventory can be distinguished from ours...?

I understand completely the plight of those that have been trading these and have inventory prior to Thursday's discovery. But I seriously doubt that the sellers or the buyers of such sets would consider damaging their own chips to help retain the value of others out of their possession. If they were discovered in the storeroom of a casino, sure they'd want to drill them, but they're in the market now.

Consider me uneducated if I am wrong.