Interesting. I never knew about it, a separate "fragile" charge. . ..... But never a problem for me because for various reasons, I always send the few chips First Class Parcel rate, and I always sandwich the chips between some cut-up bubble wrap and two pieces of thick cardboard.

Robert
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Frank Sinatra in "The Man With the Golden Arm" (1956).
http://www.antiquegamblingchips.com/StillsA_TopMaleStars.htm