Electrolux Corporation made three versions of the Turbo Rug Washer:  the scrubbing & polishing metal ones from 1949-57 (sold with cylinder cleaner models XXX, LX, LXI, E, E-A, & T), the multi-purpose metal ones from 1957-62 (sold with cylinder cleaners models E-A, F, R, & G), and the plastic ones from 1962-87 (sold with cylinder cleaner models G, L, 1205, 1401, 1401-B, 1453, 1505, & 1521).  To obtain information  contact the company, which is now called Aerus LLC, at aerusvacuums.com.  Regards.