Tom is correct. His machine is the early version which used the same wand connection as the model 105. It was found to be unsatisfactory so the later version came with the wand connection Phillip's has (same as was used on the model 120). I have the earlier version as well but no power nozzle for it (Picture below)
Mike - the models that caused the problems were the 111 and 121 which used the low voltage power nozzle.
I wonder what the life of the plastic "bull" gear going against the METAL gears of the motor and brushroll-In the one shown looked like the plastic gear held up pretty well.So my question was answered.Very unique!