Fascinating topic! Thanks for the excellent read. I have a few limited edition chips and sets that are maybe not so rare but still valuable...

Pioneer set of 12 x $5 chips celebrating Vegas History (favorite!)
HorseShoe set of 5 x $5 Women of Poker
Regent Race Day $5 and $25 chips
Regent $8 Chinese new year (snake)
Fiesta $1 and $5 set of matching First/Last Chip of the Millennium (another favorite)
...

Cheers,

Jim