Thanks for the link shutterfinger. I was gonna say it looked like a Solar enlarger; my dad had one much like it many years ago.
To the OP, an enlarger is much like a slide projector. You put the film, looks like 5x7" (?) in that wood thing that slides into the center. The big dome thing sits on top. It basically projects an image of the film onto that baseboard. The photographer would do this in the dark, puting a piece of light-sensitive paper on the bottom, then turn on the lamp long enough to properly expose it. I said in the dark, but they actually use a dim light of a certain color that doesn't affect the paper. Then they put the paper into a tray of developer and slosh it around until the image appears. I'm sure you've seen it on old tv shows. They like to use them to identify a murderer who has been accidentally photographed. Generally the murderer somehow finds out that the photographer has such a negative, and then breaks into the darkroom to steal the negative. A smart photographer will unscrew an air vent, or something like that, and hide the negative in there. It used to be a pretty exciting profession! Nowadays they'll just upload the image straight to the internet, or perhaps live-stream it.
By the way, your enlarger is missing the condenser lenses. They normally sit on top, right where that metal can, or whatever it is, is sitting. They'll probably be about 9 or 10 inch diameter just in case you find them wrapped up somewhere.
I doubt if it has much value, but who knows? If you have a photographer friend they might be able to use the base and the column for a copy stand.
