Yes, I've got a selection of older Verithins. The current generation has bad customer reviews on Amazon UK (questionable quality and lots of broken leads, possibly due to the distance they have to travel), so I bought old Berol stock instead.
I absolutely love the thin-ness of the pencil (barrel and especially the core - these older ones have an even thinner core than the new ones). They are so great for really fine detail on insects etc. I have a very bad feeling about their lightfastness though, and the lack of info about it anywhere is not making me feel any more confident!
Thanks for the link - I've looked at the lightfastness section of that (excellent) website before, and there's some very interesting lightfastness charts on there done by a reader (mixed brands). Can't find anything specifically about Berol Verithins, but the charts are quite an eye-opener!
What I really wish is that Faber Castell or Caran D'Ache would make a thin, hard-core pencil exactly like the old super-thin Verithin, but with great modern lightfastness. That would make me so happy! Not gonna happen though....