That Rockettes chip is TCR # N2401. (Located on pg. 100 of TCR-13, the very last $5 chip in the listing.

FYI, you will see the note that, of 50,000 made, there were prox. 48,300 destroyed, for a net chip count outstanding of 1700.
This is because the Flamingo Hilton produced the chips with the Rockettes name without their permission (even though the Rockettes show was performing there in 1995 when these were made).

They must have reached an agreement later, in 1998, when the 3 Rockettes serial-numbered chips were made -- the ones you mentioned.

One way to remember the difference is that the "banned" chip was made on a House mold, and the others were made on a H&C mold.