[Closed] Giant Revel headset?

So i Bought Giant revel frame to build up for my mother, I've been out of the bike trade for a while now and its headsets got me stumped, the frame was bare no headset cups no mech hanger. I have managed to source everything else, but am struggling with what head set fits it.

I was told semi integrated,so I bought one but it doesnt fit,the bearing cups are to slim for the head tube and I'm pretty sure its not a 1.5 head tube on a revel.

any suggestions on what it is, I need it to be cheep as shes going to use the bike very rarly and so far its cost me £40. this is the last part of the puzzle.

BTW uts a 26" revel 3 frame, same colours as a 2012 but it may not be