does anyone know this mark

[antiqueforus]

Hi i have some sterling silver sherberts with this mark
it has an arrow thru an S , an M with an R overlayed and a Cwith an O in the center of the C. below that is has trade mark.

thanks

How to Add Images
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[kerangoumar]

In this forum a picture is always better - try drawing it as you see it and post it for us.
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