In particular, a friend of mine had been a child during the Japanese occupation. Her grandmother had a chunk of bamboo filled with American dimes and she said it got them through the whole event. Several years as I recall.
When silver coins were still currency all over the world. You seem to miss the salient detail, which is indicative of why nobody should trust your weak powers of logic and discernment.
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Er, nope. Most nations used pot-metal trinkets or confetti as legal tender which is exactly the significance of the 'American dimes' part. Probably doesn't need to be pointed out but American coin was 90% silver...back in the day...now just pot-metal like everyone elses' of course. Money talks and bullshit walks when the shit hits the fan.