I know the Sentria from Goodwill isn't vintage, but I thought I'd include in the photo with the vintage Kirby 519 from eBay.
The 519 needs a little more TLC so far I spent the entire day cleaning it up and gave her a light polishing. She's all original with the exception of the power cord and the cloth bag is a bit faded. But she's a pretty good looker and strong runner considering her age.
Not a bad deal for just under $100.00 total including shipping for both.