Valjhun, for me the trick isn't to necessarily
avoid new keris, just to know what they are when you buy them. I also prefer the older blades, but i have a couple of beautiful modern examples as well and i think it is a good thing to encourage the continuence of the art.
As we have discussed before, dating keris is a tricky thing even with the blade in hand and much harder to do just from photos, even for the well trained experts. Often enough even experts will disagree about the tangguh of a keris and really such dating can only be taken as an estimate. So i am going to avoid making a fool of myself by even guessing on your blade.
I do look foward to seeing your third one when it arrives.