While I believe in preserving chip history I would never think of reintroducing chips at a higher value. Think about it. If the original stack cost $20 and you rebuy in at $5 each your stack is now worth $100. In order to hide what you are doing you have to buy several stacks. Now you have to gamble long enough to bring those other chips in and hope that you don't lose. And finally you have to cash in with out getting caught. All of this for a potential $80 profit vs. jail time and permanent banning from the casinos. Remember the times recenly that you have referred to others on this board as Prof. or Dr. They have a lot more than $80 at stake if they were to try something like this. It just ain't worth it!