The main difference ....
As far as I am aware, is that the 100 was in production from 1968 - 1970 the 101, also known as the Luxomatic, was produced in 1974 which was midway through the production run of the 330 - not one but two models later. According to my records it was supplied with a "de-luxe" flip over tool as used on the 94, rather than the combination floor nozzle shown, although that was correct for the Automatic 100. I wonder if the hose is original also, as the 100 had the suction control/"butterfly" dusting-upholstery nozzle on the hose handle. This hose looks more like that from the 80/91 models. These nit-picking comments aside its a lovely cleaner, one of the most elegant Luxes in my opinion, and it looks like it is in great condition. Happy Christmas
PS What is the motor wattage? The 100 was 550watts.
Al