Possible Sheffield and Paul Storr

Greetings everyone,

I’m glad to have found this form. A friend of mine at the flea market came across a multiple piece tea(?) set with platter, and creamer. I snapped a picture of the hallmarks and hopefully someone can help us out on what this piece really is. Any help would be greatly appreciated!

thank you,
Adam
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Neither Storr nor Sheffield. This is an American electroplater, unknown according to 925-1000.com.