About 6 years ago I acquired a few (I think about 12-14 chips) $5 Silver Slipper chips and a single $50 chip. See scan. Along with these chips were 3 or 4 of the $5 Stardust chips (same as in the auction). I believe the seller, who was not a collector was in North or South Carolina.

I still have a couple of the $5 Silver Slipper chips, if anyone is interested.

Nate