Okay, these are different. KEF 104/2s.
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Well... that's what they looked like new. These images are from the ad. He's asking $600 for them. No thanks! lol
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So I did look these up tho. That port looks huge to me so I knew these weren't typical. I guess they're a band pass type of design? There are a couple of upward firing 8" woofers mounted inside the cab, operating in opposite phase in separate enclosures with about 18" of air between them. Pretty cool. Those woofers are also known to sag over time and dry rot. More likely than not they'd need to be refoamed, if not replaced.
Here's a link to one of the articles I found about them. That's where I got the "good" image too.
www.hifi-classic.net