Reminded me of the Hollophane type of mesh pattern - so wondered whether it might actually have anything to do with Davidson. Cheap and very utility looking, but this reticulated pattern I couldn't recall seeing before on bowls. About 24 cms. in diameter, and it does have a little wear which could take it back to the fifties or sixties, I suppose. I suspect another item which will go back to the charity shop, if it turns out to be anonymous - but any ideas very welcome. cheers Paul S.