Here is the 1953 version of the Electrolux Cleaner (Model XXX) Users' Home Maintenance Guide. Unless the scanner's colors were off, it appears that the only cover difference between the two are the black ink on the 1950 manual and the brown ink on the 1953 manual.
I find it interesting that the Model XXX basically had only two versions of its owner's manuals with slight revisions as attachments or styles changed. I have come to learn, though, that the Model XXX wasn't as long-running as I'd initially thought. It was manufactured from 1937-1941 and 1947-1954. In fact, those manufactured in 1947 and 1948 were built with repair parts from the prewar models. So, in essence, the Model XXXs production run was--including 1947 and 1948--11 years.
If my calculations (and Aerus's product history) are accurate that would give a tie to the Model L as longest production run at 15 years (1963-1978) along with the Model C134s, C154s, C170s, and C177s (Guardian series and Lux 9000s--1999-present), the Model C151s (Ultralux Commemorative Editions, Ultralux 2000s and Lux Classics) at (arguably, as some may say that the actual style hearkens back to the Hi-Tech 2100s which began in 1985) 13 years (2001-present), the Model 1676s/C101s (Ambassador IIIs and Lux 5000s) at 12 years (1989-2001), the Model 1521s (Diamond Jubilees, Marquises, Grand Marquises, Legacys, Ultraluxes, Ultralux LXs, and Ultralux Classics) at 10 years (1984-1994), the Model 1718s, 1762s, and C102s (Epic Series--6000 SR, 6500 SR, and 8000 SR) at 10 years (1992-2002), the C153s (Lux Legacy series and Lux 7000s) at 10 years (2004-present), and the Model C141s (2100s and Lux 5500s) at 7 years. (Incidentally, in any given era over the last 20 or so years--ever since the model ids with letters and three digits replaced the four-digit ones--the highest numeric model ids signified the premium models, the next highest went with the medium models, and the last highest went with the minimum models.)
I find it interesting that the Model XXX basically had only two versions of its owner's manuals with slight revisions as attachments or styles changed. I have come to learn, though, that the Model XXX wasn't as long-running as I'd initially thought. It was manufactured from 1937-1941 and 1947-1954. In fact, those manufactured in 1947 and 1948 were built with repair parts from the prewar models. So, in essence, the Model XXXs production run was--including 1947 and 1948--11 years.
If my calculations (and Aerus's product history) are accurate that would give a tie to the Model L as longest production run at 15 years (1963-1978) along with the Model C134s, C154s, C170s, and C177s (Guardian series and Lux 9000s--1999-present), the Model C151s (Ultralux Commemorative Editions, Ultralux 2000s and Lux Classics) at (arguably, as some may say that the actual style hearkens back to the Hi-Tech 2100s which began in 1985) 13 years (2001-present), the Model 1676s/C101s (Ambassador IIIs and Lux 5000s) at 12 years (1989-2001), the Model 1521s (Diamond Jubilees, Marquises, Grand Marquises, Legacys, Ultraluxes, Ultralux LXs, and Ultralux Classics) at 10 years (1984-1994), the Model 1718s, 1762s, and C102s (Epic Series--6000 SR, 6500 SR, and 8000 SR) at 10 years (1992-2002), the C153s (Lux Legacy series and Lux 7000s) at 10 years (2004-present), and the Model C141s (2100s and Lux 5500s) at 7 years. (Incidentally, in any given era over the last 20 or so years--ever since the model ids with letters and three digits replaced the four-digit ones--the highest numeric model ids signified the premium models, the next highest went with the medium models, and the last highest went with the minimum models.)
