I'd say not Paiste. More likely Italian, but note this does not imply UFiP in particular. Look at the lathing on 400 (and other lines) and you won't see those well defined step changes in the lathing. Paiste mastered the continuous and consistent lathing style without that kind of stopping and starting. I've marked most of the step changes I see:
[img]http://black.net.nz/cym2016/lathing-step-changes.jpg[/img]
The lack of any markings is also consistent (but weak evidence) that they could be Italian. There are plenty of Italian cymbals which have no pressed in die stamp and a small ink stamp which says MADE IN ITALY in either round or square form. But the ink goes away with cleaning leaving the origin a mystery to most sellers. But it is weak evidence given that the seller may just not be able to spot a stamp (ink or pressed in) because sometimes they hide well.
That style of hammering is also found on Italian made cymbals so it is again consistent, but not strong evidence.
I can't rule out something else like one of those relatively obscure brands from Europe, or something Chinese. But I believe I can rule out Paiste.