The riverboat ivory is shown for size comparison purposes. The ivories are 2” each.

Years ago the late, great Kenny Craig told me the $100 (“Big Blue”) sold for $5k. There are 3 or 4 known. Besides Kenny and myself, Robert Eisenstadt had one (pictured on the homepage of his website). In todays market, I doubt it would sell anywhere near $5k.

The $50 chip which, in my opinion, is prettier, the same size and rarer (only one known) should be much more valuable.