Is this Chinese coin real and/or valuable?

I was asked to give an opinion on this coin. I couldn't because I just di U.S. coins. Can some one tell me about this coin? Is it realm Is it valuable ?

 

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I do not like the look of it, the surface is grainy and looks cast to me.
Best to take it to a coin shop or jewelers for silver content testing.
https://www.dragondollar.com/coins/tag/one-tael/.
Some google searching may provide an answer.

 

Thanks!