In 1987, and a year after the last opalware versions were discontinued, the three smallest 400 series nesting bowls were produced in clear glass and supplied with plastic covers as part of the Storage Plus Storage System. Designated 7401, 7402, and 7403 , they were also sold as a #7252 set. This traditional 400 series shape disappears after the 1989 catalog. Sculptured versions first appear in 1992 catalogs. There was never a 7404, but there is a sculptured 7404-S. One might be tempted to think the 7404-S is merely a clear 404 given the "sculptured" treatment, but we can see here that an opalware 404 nests comfortably inside it.