Great Scan Series - Well Done, Very Well Done Indeed!
Water Use:
If those washers are anything like my W1070 which came along a bit later, there would have been four or five very high water level rinses. At least two or three before the washer even attempted to spin.
Early Miele front loaders (including mine) were in fear of suds locking, and since not all detergents were "no sudsing" or at least weren't by today's standards, the machines had to flush out as much of the detergent/froth as possible before spinning.
Persil "59" for instance contained chemicals designed to create froth (much like Tide), with a new low sudsing version not hitting the shelves until around the 1970's or so. Even then there probably would have been lots of old or similar products around.
Also these machines (again like mine), only had one or two spin speeds and a tachometer. Unlike the 1900 series washers, and those that came aferwards where spin speeds are controlled electronically. The later invention means the unit can slowly ramp up to full speed in order to prevent masses of froth (if required), from choking the pump. On the former type machines the motor will only slow down if a safety kicks in because too much foam is overwhelming the system.
As for the adverts in general, notice that unlike the USA, these housewives are shown in slacks, jumpers and flats; instead of dresses/skirts/blouses with or without pearls. On and there is nary a pinny (apron) to be seen.
Someone in the USA posted on their blog about finding one of those early Miele ironers. IIRC it was in Atlanta or some place down South. Apparently the difference in phase does not bother the thing, long as it gets 220v power. Like Ironrites here, there are plenty of those Miele ironers still chugging away all over Germany/EU.