I noticed it this morning. I'd agree about being 12x20 as its dimensions don't look right compared to my Korona 8x20 and the bellows extension he lists is a few inches longer than my camera's. Not sure how you read the lens size. I stared for a few minutes and couldn't read it, and didn't want to get my fever raised by asking what size it was.
By the by, since we're talking spoilers here, it's not ULF but there's also a complete 5x7 Elwood enlarger with 5x7 film tray going for almost nothing but pick-up in Erie, PA. If I didn't already have one I might have considered swinging out that way on a photo trip. They don't go for much because of their weight and age, but this one looks very complete. Be a shame to see it just thrown out.