¶ I am guessing the seller of the Arizona Charlies chip is probably a nogoodnick.
¶ But there is no precise meaning of "rare." A dealer could claim something is rare if he doesn't usually trip over it as he walks down his street.
Robert
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Tallulah Bankhead at baccarat table in "The Cheat" (1931), a pre-code film about an aristocratic married woman who succumbs to a rich man to hide her losses at baccarat and then her charity money in the stock market. The caption to the still says, "I'll have to give you an I.O.U. until tomorrow night ... .... ."
http://www.antiquegamblingchips.com/StillsC_FemaleStars.htm