I have, unused, "Two Dartington Handy Bowls FT166" in their box. But the Frank Thrower design list shows under 1974 "FT166 Dimple Dish and Bowl" which my bowls are clearly not. The nearest on the list is a 1978 entry "FT229 Handy Bowls - CR - CRpair" which look like mine except that mine are smooth glass. Am I in possession of copies perhaps? (There is a note with the bowls which starts "Due to the ever increasing use of dishwashing machines,...."!)