Hi Philipp,
funny I am finding this post of you.
It appears to be common practice that Rolex restores vintage dials such as the PNs with new lume, as I recently met a good friend who had his watch in Geneva for an overhaul, and when it was returned, it was shining like a maglite in the dark. Soooo sad. I do not understand why Rolex has no interest in the watchcollector community and in their own heritage?
Cheers, Boris