From my research I was able to determine the following -
Your bowl is obviously Asian but I believe it to be Chinese cloisonne dating mid-to-late 20thC. I bought some very small metal and ceramic boxes like this in Hong Kong 20 years ago. The metal is not silver but, more likely, nickel.
It has a retail vintage store value of $350-425.
A private seller to a dealer can expect 30-60% of retail value.
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