Almost finished! The frame's a Jonkers, made in Rotterdam, almost certainly Columbus SL, although it's been resprayed (according to the columbus sticker). I've seen a couple other Jonkers, but never one this nice IMHO. Groupset is full shimano 600/Ultegra.
Gears still need to be set up, spent ages trying to look for a fitting cable bolt for the rear derailleur, but I managed.
Nice bike.
Jonkers is an ace name.