Came across a single slabbed chip from a seller on ebay.
An old one from the brief time that slabbers unsuccessfully tried to introduce slabs to chip collecting.
Nothing to worry about, IMO. Just a stray that survived and is being offered.

I'm amused that the slabbers didn't even take care to place the chip right side up before sealing it.
Either that, or the surrounding material is not snug enough, so it has allowed the chip to rotate over the years.
Not an elegant solution, in either case, IMO.

OK, I'm done.

http://cgi.ebay.com/Silver-Palace-Cripple-Creek-Colorado-5-Chip-Perfect-/180667745424#ht_500wt_1156