Large, heavy, decorated stoneware platter - identify mark?

I have a large and heavy stoneware cream platter, in an oblong shape and with decoration.  It measures 16" x 9", and has a thickness of just under half an inch, making it very heavy.  The lip of the platter measures approx 2".  The base is unglazed and there is a raised maker's mark on the base which I can't read.  Does anyone recognise the mark and the style? Any help would be much appreciated.

I think the ‘mark’ is a glaze drip

Thanks Naomi - I initially thought that too. The raised area within the glaze that I thought were letters is of a different texture to the surrounding area. It's hard to show in a photo unfortunately.