Found this random sander at a yard sale - any good?

So I scooped up this weird orbital sander at a yard sale for $10. It's a 'Dynabrade' something, looks old but solid. Is this a score or a paperweight? Never heard of it.

Bro you got a Dynabrade! Those things are pro grade, made in USA. They use them in autobody shops. For $10 that's a steal, even if it needs a new pad. Check the bearings, if they're smooth you're golden.

Dynabrade? Never used one. I stick with my DeWalt 20V max. But for $10, can't argue with that. Just don't expect it to last like a yellow and black tool haha.

$10 is a no-brainer. Even if it dies tomorrow, you got your money's worth. Use it until it pops. I'd clean the vents and lube it up though. Good find!