That's an interesting unit, and based on the handle design and clock style, I'd place it between 1953-57. It looks to be the 54" size. I agree the faucet placement looks rather awkward, but it would be easy to fill large containers there. As for electrical safety, as long as the wiring was updated and properly grounded, it would be no more of a hazard than a disposer. The cover over the light must be missing; shouldn't be too hard to make one for it from glass or plastic.
I well remember the Elkay sink with the fluorescent light that Tomturbomatic mentions. One of my classmates in elementary school had a party at their house when we were in 6th grade, and their kitchen had that sink. It also had Frigidaire built-in appliances in Turquoise. His dad was a builder, and everything in the place was TOL.
The high school I attended had Elkay sinks and faucets in the home ec and art rooms, including the fancy aerator. The art room had custom deep single sinks, placed back to back integral with the stainless countertop. I'm sure it wasn't cheap at that time, and would be outrageously expensive now. Not sure if Elkay still makes the swivel aerator you speak of, but they do offer a nice one on some of their faucets. The deck mount control drain is item LK94 and lists at $288 each.
