What is this mark?

[williamh]

I found this mark on a very old looking vase. I was not able to find its origin. Does someone know what it is? Thanks

[Mat]

Could you please show the vase itself, too?

[Stan]

It almost looks like an early Worcester mark, if it is it would be earthenware a soft past clay and would date to the mid 18th century, but from this photo the bottom dose not look like it has that kind of age.