Rob,
Your 66 is georgous!!! That must be a replacement hose, as I think the original would have been brown. If I get time I will post the Instruction Manual for that machine.
I believe the hose to be original on the Model 77 that I purchased from Charlie, it doesn't carry suction well anymore, so I have a vinyl hose that I use for normal use. It also still has the aroma pad/filter as well.
I can still remember my grandmother pulling the kitchen table close to the refridge, setting the model 66 on it's runners, placing the S wands in the blower port to defrost the freezer on our Philco Refridgerator. Oh the memories!!
Morgan