Old eureka & sanitare
Not sure of the year 70's or 80's is my guess
They wanted $25 each
I know the picture is not great there wasn't much room to take it.
I am not sure as I don't have much experience with the machines we didn't get over here. They might be worth fixing and re selling. How much mechanical knowledge do you have. If you are fairly mechanically minded they could probably be refurbished and sold. If you refurbish them they will work a lot better than pretty much all box box store vacuums. Maybe worth keeping one.
Ebay is good too. In NZ op-shops (our name for a goodwill type shop) they cannot sell any electrical items without testing it unless they cut the cable. Therefore the nice matching cable on my g6, Hoover u1334 and a few others had been cut.