Mystery hallmark of a two-headed beasty. Help?

These spoons were literally “unearthed” in a dirt basement. The hallmark looks like a two-headed beasty. I can make out the patent - sep 7 186 (3) ? but not the name. The name looks like it was stamped sideways, obliterating the last few letters. Can someone identify this for me? Thank you very much for your help.

Sheila
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