I agree, Nicholas,
that the Model F has a certain charm about it. I remember a LOT of them when I was a kid -- funny thing though, I do not remember a single one with the halo instead of the cord winder! In fact, all the ones I remember except one had the earlier "AE" style swing-open cord winder.
The only one I remember with the new donut-style winder was when I went with my dad to one of his friends' house, and their brand-new Model F was stretched out in the living room ....... with the "revolutionary new" POWER NOZZLE! I remember seeing that so very clearly, and was awed at how big the "floor sweeper" was!
I looked and looked and LOOKED for years for a Model F power nozzle -- they are quite scarce, and finally a couple years ago a member of the Club sent me one. I was jumping for joy that day!! Check out the link to my Model F page---
[URL unfurl="true"]http://www.137.com/af[/URL]