| http://www.w3.org/ns/prov#value | - The only exception is some tiny tumblers and bowls I have (all clear glass, c.1940) but I think these are a different pattern anyway ??? similar to WF diamond-moulded (Whitefriars Glass, p113) but not as pronounced.Looking at the same book, p115 & p123, it would seem that all WF wave-ribbed glass would give the illusion of being 6-sided when viewed from the top.Following is a profile of the same t
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