Thanks for the info on the Economy Model upright. I too, am partial to cloth bags on a vintage vac. I'm surprised Birtman Electric was still producing vacuums as late as 1960. Birtman Electric produced the first Kenmore vacuum (the Energex) around 1920. Charlie Lester has one. While it will never have the desirability of the Kenmore "Bugeye" Imperial, I'd sure love to have an economy model for my collection.