Reading this silvermark

Hello everyone!
I would be very grateful for your help with reading this hallmark. I assumed that it was silver plated but not sure. Tried to do my own research but failed miserably…
This is salt cauldron cellar and I am aware it needs cleaning.

Thank you in advance!

Best

Kris
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I don’t recognise the mark, but it’s almost certainly silver plated. It has the appearance of an English electroplate mark where the separate “S” stands for Sheffield. Due to the lack of a hallmark or other fineness indicator the chances of it being silver are vanishingly small.

Thank you very much! Indeed it is silverplated as confirmed by cleaning.

Best regards

Kris