Pete,
The boxed set was, I assume, a gift shop or souvenir shop item. BUT if you look at the scans on the other pages, we've found the SAME swizzles from every casino except the Pioneer. I believe the others are from the casinos. ( If the boxed set was collected one by one from the casinos, by an enterprising individual, they also made up a nice box with color graphics and a custom designed tray inside to hold the sticks! )

Bunny ears on the Playboy sticks sound like the ringmaster's whip on Circus Circus sticks!! I've seen dozens of ringmasters with broken whips.