I have seen this before .....
From Finland - a lower cost version of the Automatic 100. You do not show the front but the other one has no bag full indicator, did not use self seal bags and had, of course no self winding flex. The floor tool is interesting (at least in the UK) as this style had not been seen in the UK since the earliest Lux 65 in the very early 1960s. The hose looks like it is origional, interesting to see that it has a suction control and that, oh so handy, clip for the combination upholstry/dusting nozzle, but yet no plastic handgrip.
The video link below shows the 99 in action. It is worth looking at his other videos as they show that, in Finland at least, Hoover Constellations did not float.