There may be merit to this. It is quite possible that
TRK had two formulations of the substrate: casino and non-casino. The leaded version may have been the premium formulation, designed to feel heavier and last longer/wear better in a casino environment. The other formulation may have been cheaper, as well. That might explain why the Riverside “fracs”—which are labeled 25¢ but also labeled “no cash value”—are lighter. They weren’t actually cash chips...rather they were most likely “match play” chips that could be used to bet with but could not themselves be redeemed. Thus, the casino didn’t invest in the premium formulation for these chips since they were only for promo/comp purposes.
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I’m pretty sure your assessment is accurate. I have a rack of Don French’s Bonanza $1s that are labeled “non negotiable,” they weigh in at 8.6 grams each.
I wasn’t sure if they were real at first being their light weight and “plastic” type feel.
I did some research and was reassured by David Spragg that these chips were completely authentic.
Was also told the casinos didn’t invest the money in these type of chips because of the same reason you mentioned.
Great information to know especially being more new to the
TRK collecting market.