I agree with that, but vacuum cleaners then aren't built the same way as they are now, and you know that all too well from your previous conversations.
However, to Miele's credit, even though the pic I provided came from a seller on EBAY UK whose actual model has parts that have failed, I wouldn't expect a vacuum cleaner from the same period as the Miele to last that long.
That Miele, like so many others where they may be listed on EBay can be made to look brand new. Owners won't bother dusting it, polishing it or even giving viewable exterior parts a darn good rub down. It is a vacuum cleaner, not a crystal glass ornament to be admired.