I used to use this phone on a regular basis, not the oldest of the lot, but pretty old. Only infrared file sharing, not bluetooth here!
I'm yet to test this with my Libretto because they both have infrared, the only thing that's stopping me is that the SIM card isn't in the phone anymore and so it won't get to the menu. None of my other SIMs work either.
Shame really, it had a ton of games. It's a k300i by the way.