It's a very nice model 66. I like the simpler decals yours has a lot, they are still in good condition. It should shine up very well. I would find a nicer lamp for it, something like
this one. The one that's on now is a later addition, and the narrow type bakelite or shiny metal version with Singer logo was most common on the 66. The table is very nice too, it's a stable type, with furniture felt under the feet it makes it all run with out much noise. The black shellac finish and chromed parts are a bit dirty and needs a good cleaning, but looking at the internals under the base they are in nice clean condition. It should clean up perfectly. Since the plug and wire is the, I guess there is a knee controller in the table. It was very common with this type of cabinet, but it should't be too difficult to fit with a pedal since plugs and everything is there. The kneelever is nothing to worry about, they work very well.