quote................"You do realise that etc. etc............." - you do realise

are talking to a very computer illiterate genius - so no, I wasnt aware of this, but do now, so thanks and I will try to remember for the future.

Thanks Anne, as I say I was looking too quickly for my own good, and simply missed seeing the Edith pieces on Pamela's site.
I agree with the comment about number of rows - all patterns, whatever their individual design seem to have six profiled convex mouldings lines, running horizontally around the outside.
Full marks to the ebay seller for doing some homework and getting the pattern name and factory correct.
So, Jayne, seems you were right and this is an item from the Walther 'Edith' range. Unfortunately, it seems I've packed mine away in one of umpteen boxes for the time being - it happens often when I don't get anywhere immediately (it's called a lack of patience).
Thanks to all for doing the research (whilst I was sitting comfortably and enjoying myself in the British Library)