Vacbear thank you for all the information.
Turbo500, reading Beko's message as I did, he was saying that when the Turbopower style Junior was on sale as part of the Turbopower line up, the cleaner always said "Turbopower" and "Junior" on it, unlike in later years when the Turbopower style Junior was sold simply as a "Junior", as per his photograph above.
Frankly, when the Turbopower Junior went into production in 1983, I felt the time had arrived to finish making the original Junior as we knew it. Granted that countless Juniors were sold between 1983 and 1988, however, had it not been available, consumers would have likely purchased the Turbopower Junior instead, particularly as there was nothing else really quite like the Junior by then, save for perhaps the Electrolux 410. Even the Goblin Commander and Moulinex softbag cleaners were competing against the Hoover Turbopower Junior and not the U1104 style Junior.
How Hoover could afford to keep making so many different models and also exclusive versions of the same is beyond me.