Tell for this watch should be that the date window touches the 3 marker.
Looks like the date does touch the 3 marker so I'm leaning towards JF version. But this is indeed a weird angle with the cyclops so it's really hard to tell.
I mean, you know the colleague so just think about his income and whether he can afford a watch that costs around 40-50k. If your answer is no, it's probably a JF.