Even though this is an old thread, I'd offer some corrections along with additional info. from several other sources:
The first Ambassador cleaner, model 1623, was introduced in 1989, after the Model 90, model 1623 (1988-89), the taupe L-E, model 1623 (1987-88), and the jade L-E, model 1623 (1985-87). As far as I know all had a 10 amp 2-motor system.
Others in the Ambassador line included (not all internal changes known):
Ambassador Plus 1623 upgraded 11 amp High Performance 2-motor system; pn 1723 (1990-92)
Ambassador II 1676 air watts upgrade from 292 to 308; pn 1724 (1992)
Ambassador III 1676 colors (1993-94); pn's 1724 & 1751; reversed to match new Epic 6000SR & Ultralux Classic 1521
Ambassador III C101A; pn N115A; new model id but otherwise the same as the 1676 (1994-95)
Ambassador III C101G; pn N115F; 2-toned gray (1995-97)
Ambassador III C101H; pn N115K; oyster & fog (1997-99)
Ambassador III C101J; pn N115L; white & capri (1999-02)
Ambassador III C101L; pn N115Q; white & capri (2002)
The Lux 5000 C101K in white & capri was the last of the model C101s, but unlike the others it was equipped with an electric wand.
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Here a photos of the C101J & C101L. I don't know if 'by Electrolux' indicated that its manufacture was outsourced or if it meant that it was sold directly to the consumer rather than by a door to door salesperson. The flag "Made in the USA" decal seems to hint at the former; like Electrolux wanted to assure its customers that production was still in the homeland.
