I believe these are all varieties of the same design inlaid 50c chips that Fremont used in the 80's. I collected inlaid fractionals and have duplicates of some of the pink Fremont's.

The scarce one is the first one with the black F on Freddie's hat and the smaller cent sign. The Chip Rack catalog number is listed for each.

If you need one or more of these varieties for your collection, the prices are marked. $2 postage for any number of chips. If you need all four, make it $40 and I'll pay postage.

I have several of each variety.