The Elux Model AF, in 1959, was offered with an optional power nozzle, as it had a power nozzle outlet on the top center of the machine, to the left of the chrome trim.
The first Elux PN-1 was white with beige trim. It was only sold for one year as a distinct accessory for the AF until the Model G was introduced in 1960, when the PN came out in white with turquoise trim.
Incidentally, the white/aqua PN from 1960 matched the early Model G and Model L (from '63), and the Model L from 1968.
The earliest Elux PN-1 from 1959 only matched the AF and R for one year. It was the first year that Elux offered a PN...in fact, it was the first year ANY canister vacuum was offered with a power nozzle.
Actually, there were earlier vacuum cleaners with power nozzles, but not by much. The Lewyt Electronic and the Compact "ABC" ("Always Beauty Clean") power nozzles were introduced before Electrolux came out with theirs in late 1958. And the RCA Whirlpool "Imperial Mark XII" with a power nozzle, introduced in 1958, may also have predated the Lux's.
btw the first PN-1 was very expensive, something like $49.75 - big money in those days, and approximately half the cost of the vacuum cleaner which was $89.75 I believe, but would have to dig through my stored archives to get the exact figure.