Hello, need help identifying. Junk or something better?

[datsun82]

I found this at an antique store for a few dollars because it was on sale. I thought it was interesting because it only had the symbols on it. If anyone can help identify it I would appreciate it.

 

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[Darrow]

Copper olive oil pitcher? Neat find

 

[datsun82]

Thanks for the reply! Never thought about that. Should I clean it up or leave as is?