Help please identifying this lovely vase, SO or LO mark?

Hi all,

I'm getting nowhere on this lovely vase to me it's looks like a key, but I've had no luck on bispm.

I've tried them all, letter Q, O tree, insect, circle.

If anyone could help that would be great.





It's white clay/porcelain with a simple blue pattern to the top and green lines to the base.

Thank you

Emma aka TWB

the decoration is a bit messy. I suspect it's a hobby potter

Thanks Naomi