The striped caps are probably Sprague Black Beauties. I have some Black
Beauties and all have a 2 molded in recesses on one side, and various
letters molded in recesses on the other side. If one of the
capacitor's leads are soldered into a nipple on one side, they're oil
filled.

Was the oil 'PCB'?

Plain old mineral oil. PCBs were too expensive for consumer
products, and were always identified by trade names like Clorinol.
Hyvol, Dykanol, Inerteen.

73, Alan