These are the scarce ones, based on my scrounging:

1. Dunes 5000 purple/4 orange
2. Mint 1000 brown/green pie
3. El Rancho Vegas 5000 orange/brown pie
4. Thunderbird 1000 pink/blue pie
5. Thunderbird 5000 blue/mustard pie
6. Silver Slipper 1000 pink/black pie
7. Pussy Cat a Go Go 1000 pink/cream pie
8. "Jolly Trolly" error 25c
9. "Jolly Trolly" error $100

I still need 1, 2, 4, 7, 8, and 9.

I suspect these two exist as well, but haven't seen them. The pie molds were broken towards the end of production and plain chips with inserts were made for most denominations to replace them:

Castaways $1000 with inserts, not a pie

Jolly Trolley $5000 with inserts, not a pie

All but the Dunes are pictured below.

This will be tough set to complete, probably offered in the 2010 club auction for a big price [g].

DonL