Help to identify a pottery mark, please

[beatrice834]

Hi, I have my British Studio Potters' Marks book to hand but cannot identify the attached potter's mark.  The vase was bought at auction with a whole lot of Studio At Pottery so I assume it may be somewhere in the listings, but can't find it.

Any help appreciated, and thanks for reading this.

[audreyjohnstonantiques]

the potters mark isn't actually showing. Try re-attaching if you haven't identified it yet.