Tested OZ38's 0280155968 injectors and they look like their genuine, i can't prove otherwise. Spray pattern is V pattern, markings are same as genuine, see photos, 777 VT injector on right, 968 middle and fake 968 on left. Markings on plastic body and assembly and also markings inside the nozzle. Genuine Volvo part number on the body and also Genuine ones from what i have read have only one rail clip slot, coil resistance is the same as genuine unit, the fake ones have lower resistance. Im not sure why one has numbers melted out but it performs identical. I wont do any further testing, finding these are rare, prices otherwise not worth it compaired to say denso units i have been using.
Here's the 100% Flow rate for them
41.89LB - 440cc @ 43.50psi 3bar
46.46LB - 488cc @ 51.5psi 3.5bar
48.35LB - 508cc @ 58psi 4bar
You can also see my fake injector testing routine here which is one way ive proven 100% of time so far if they are or not
[youtube]
http://www.youtube.com/watch?v=X7CfPe-P_9Y[/youtube]