In one shot you can see that the disc is a 45 RPM disk with a “breakout” center. I remember running into a few of these. You could play it on an LP spindle or knock out the center to use a standard 45 spindle.I guess to use ordinary 45s you’d have to push one of those metal or plastic adapters into the hole. I don’t know what happens if the adapter slips out while you’re waving your portable about.
