just some random thoughts whilst we're waiting..............
Second item down in the permanent library threads, in British, is an archive of Thomas Webb colours................... to the best of my knowledge they didn't offer this smoky pale grey sort of colour - so very unlikely to be Thomas Webb.
W.F's did produce colours such as silver, pewter, twilight, and they had some shapes described as 'thick walled', but whether those colours and shapes were produced at the same time I've no idea. W/F's not my scene so shouldn't comment.
Looks on the face of it more likely to be Scandi of some sort, but famous last words etc.
