Ten Troy Ounces would be my guess, but it could be 10 grams. Doesn't it say what the unit of weight is? The .999 is the purity.
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10000
Jorrit Bergsma of the Netherlands won the silver medal in men's 10000 metres speed skating.
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gvmw 10000
elephant
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Without a detailed description to include ALL markings, it could be from 100-10000 USD
10000
Impossible to say without a detailed description of all markings and features. Could be 100-10000 USD.
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Depends on the condition, whether or not it has a matching scabbard, and whether or not it has regimental unit markings. But generally around $100.