What is this condenser used for?

Can anyone tell me why this condenser was mounted on the outside of the distributor? I always thought they sat adjacent to the points under the cap. I’m pulling a 68 barracuda out of storage after 42 years, and I can’t tell you how nice it is to see a car that needs everything, but isn’t butchered. Looks like most everything is there, minus the radiator, alternator, and power steering pump.

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