No Peekie - Not at the Table and Not With Your Big Chips

Two players at table #11 were in a hand and one player called all-in after counting his opponents chips (calculating that he had him covered). The only problem was that his opponent had his larger denomination chips hidden behind the smaller ones. The floor was called over, and the hand was declared dead. An announcement was promptly made regarding the rules. You must have the largest denominations in front, in plain sight. No dirty stacks, etc.