As you may have guessed by now, I'm a sucker for a project and picked these up the other day.

They felt reasonably light, the stanchions are 30mm with a kashima style coating, the dual air was not in the rock shox style but both uppers had air springs and were holding air. The big issue is the rebound damper or part of it has gone bye bye. I could also see they had been badly rattle canned and there were some painted over label's.
When I got home I put them on the wife's thermomix whilst she was out and they weighed 1.65kg, not bad. So I started dabbing some nail polish remover over the painted label and the paint softened. That seemed a little slow so went out to the shed and tried a little acetone, which seemed a little too aggressive. There was also some sticky goo where there had been two wraps of white electrical tape on the lowers. Some 100% methylated spirits, loosened the goo but also started to remove some of the paint. I guess you could call that goldilocks.
I couldn't make out the writing at first at the top of the lower, it looked like some sort of an O. But when I started cleaning down near the drop out I started to see a familiar logo.

So the mystery is half solved, they're some sort of Magura but I haven't quite worked out what yet. The only other clue the seller had was they came off a 2008 Trance but from searching they were not OEM fitment. Fingers crossed, someone may still have some parts available at a reasonable price to get them going again.