I've seen Riyals made into spoons, quite similar to these, and same time period - mid 50s; but no idea about the purpose of the pointy addition.
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It could possibly be played with hammers like a hammered dulcimer; but in the US and most other countries, hammered dulcimers are...
I'm pretty sure these are castings; if not resin, then some other material.
Wondering if it might be India or Pakistan, or somewhere in the Middle East, rather than SW Native American...
I use my Pyrex color bowls pretty much every day.
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