I'd say these are for Model G, or similar vintage. They definitely don't fit with Lux 1205, and (possibly) later series. These look nice and you don't see them too often.
I think these were genuine replacement brushes continuing the style of the Mo XXX/LX brush and not standard with any Elux.The dust brush was often the first to wear as some use a scrubbing action and don't let the air and bristles do their job.There was also the optional white bristle dust brush available into the 80s for cleaner more delicate items such as lamp shades as opposed to 'dirty' areas such as baseboard and edge of floor.A great and useful brush unlike todays 'toy' attachments on many brands.
