I jumped on a rarity of a Hoboken 112 and no regrets there. The guitars sounds like a choir of angels. I haven't played it in a while but when I did, I couldn't even look at a 6 string, no interest. I have since recovered, but I don't get the 112 out of its snakeskin case because it is mind altering as well as habit forming.
The modest F112 delivers the goods. Has 12 strings, check. A tiny body, maybe without a ton of bass. I remember it being very flat in EQ, which is good. I don't like what I consider to be three courses of two strings (F guitars) or two courses of three strings (D guitars) fighting each other for volume. It's also very sweet sounding, pretty. I took it to a big regional Jam, pretty ladies start dancing magically, not even making this up and won't go into details about lithe young underdressed contorsionist exhibitionists, I'm still trying to unsee that because I'm married ;]]
So what is it missing that the other ones have?
F212 bigger body double bound white binding not black like F112 same woods hog/spruce.
F312 Rosewood/Spruce double bound, bound fingerboard.
F412 More better than 312, maybe bigger. Maple back and sides.
F512 featured on Tommy, you'll probably never gets your hands on it, specs don't even matter, but basically more better again than the F412, probably bigger. Also Maple/Spruce, beautifully flamed maple back and sides.
F612 I've heard of it, or I think I heard of it.
What's the takeway from all this?
F112 is by by far and away the best bang for the buck in a 12 string guitar that has ever existed.
Look for one.
This is #12 to come out of Hoboken in '68, I got lucky I guess. Sold in Jenkintown, an hour and a half away from Hoboken, one owner.
These are day of receipt opening the case pics.