Looks like a Cyclone to me but the one without the continous mounting band. FD-2400 on this page I reckon:http://www.disraeligears.co.uk/Site/Sun ... age_3.html
Such a shame Suntour went under as they made really good gear - certainly from a road bike perspective anyway.
I sure that you're are right, Mark.
I wasn't aware that there were 3 derivatives of the Cyclone MKII front derailleur. Luckily, it'll be going on a bike which already has a Cyclone MKII GT rear derailleur, so it'll match up fine.
Thanks also, for the link to that site; I've not seen it before, so I've put it in my 'Favourites'.