Big Hagstrom fan here. I owned over a dozen of their guitars (mainly solid-bodies) in my years as an electric player. (I sold my Fender after discovering my first Hagstrom in a pawn shop in the late '80s.)
In the '90s, my band Cul de Sac was on a tour of Sweden and passed through the town of Alvdalen, which I suddenly realized, from those little decals on Hagstrom headstocks, was where the guitars had been made.
I sent the rest of the band out for lunch and explored the town, and by pure chance met Karl Erik Hagstrom, who'd been head of the company throughout their heyday as a guitar maker.
He insisted I get in his Lincoln, which he drove to the outskirts of town in order to gave me a "tour" of the abandoned Hagstrom factory. He also gave me a bunch of old catalogues and parts, had me sign the guest book, and showed me the Hagstrom room in the basement of the local museum, where there were mint examples of dozens of Hagstroms in glass display cases. Quite a memorable day!
This just in: I just sold my remaining five Hagstroms (I'm keeping the very first one I owned) to an LTGer, who is also a big fan.
If anyone needs one of those thumbscrews that hold the tremelo bar in place, LMK. I was always losing them and as they were impossible to replace with anything you'd find a hardware store, I bought a bunch of extras.