While Sandy McLendon can weigh in more full on the 1205, I can tell you that the earliest version still had a hose with a wrap-around power nozzle cord.
I was very surprised to read above that there apparently was also an electric hose for the Tan G. Because what I was told by a long-term Electrolux man, who started selling them in 1959 with the Model F, that an electric hose was offered as an option for the Model G.
He said the electric hose was prone to failure and was a big flop, so they were all recalled and replaced with standard hoses, and the designers went back to the drawing board -- not coming up with a new and successful design until quite some time after the 1205 had come out.
Thus, to find a Model G electric hose is QUITE a big deal -- there are just not any of them around. I'll bet most of you will never see one in your lifetime. I have seen one, actually touched it --- OOOOH, AHHH! --- a former collector (and former friend, but that's another story) Back East has one.