Plate / Bowl ID - possibly Wye Valley?

Hello,

I would be extremely grateful if anyone is able to shed any light on the maker of this plate / bowl. The mark on the back looks like it is a W and a V, i understand that this is the mark of the Wye Valley Pottery however i have usually seen that mark inside a circle or a square. I also recognise that it may be upside down and it could be a M and an A or something else.

I had thought that it might be a Margaret Leach / Lewis Groves Taena piece but I understand the mark for these pieces is usually a cross inside a circle

Any thoughts would be gratefully appreciated.

Many thanks

Thanks for taking the time to look over this question. I have looked at Marcellus Aubry and his mark appears to be handwritten / scored rather than stamped. I have yet to figure out which Spanish tableware manufacturer you refer to. Thank you for your response though, it is very much appreciated.