The Kleenex tissues Jewel box design was first used in 1969 in several different colors. It appears to me that Eureka's upright nameplates, made from 1972 to 1977 or so have a similar look. Quite possibly one of Eureka's designers just happened to have a box of Kleenex on her/his desk while developing the new nameplates. Check out the 1969 Kleenex ad and the Dial A Nap model-types 2042-A in Moss Green base and 2042-D in Arctic Blue: