There have certainly been cases where casinos have changed out chips due to an irregularity. In this case, my guess is that most of the haul was in the $25,000's and that's likely all they would swap out on the tables. How many 100's could the motorcycle guy have taken... a million in black chips would be ten thousand of them, or about a hundred boxes. In a casino the size of Bellagio, I doubt they would bother as they couldn't have lost more than a few thousand dollars in this denomination.

The 25K chips are already closely scrutinized when redeemed, although they might bring in the backup set for these as not many of this high denomination are used and it wouldn't cost much to replace them. Remember that in 1989, Dunes only had 400-500 of the $25,000 baccarats in stock when they closed. Inflation does change the use of big chips of course, but still the float would likely be in the hundreds.

Kendall's remark about the RFI protection is interesting. Bellagio doesn't use Chipco chips. Although GPI (Paul-son) does make RFI readable chips, I don't recall that Bellagio has any provision for reading them at the cashier's window. Wynn uses them, and does have a "hot spot" at the cage where you have to put your chips being redeemed.

We will not likely hear about their exact response to the robbery as it's not worth it to the casino to disclose ANY details of how they protect themselves. If they have swapped the hundreds, they would have to do it immediately. Maybe someone in town can report on what the blacks now look like.