Hi Clavi,
i hope you don't get bored by reading this, but you've got some beautiful watches, and lapis is one of my favourite E855 dials by design.
The only irritating part about the lapislazuli mystery is that i mostly see them surfacing from two sources (in Paris or near Hamburg) of rather questionable reputation. One sells remarried watches, the other is an expert at an auction house while he also sells watches (conflict of interest in pricing?).
By the way, i saw Zsolt's Lapis version on Zaf's site a few years ago. I believe i also read something about a belgian guy, maybe you might know more, Clavi? We will probably never know if they really existed, unless we find an old JLC employee confirming them. The approach of an expert dealer to legitimise them by feeding them to market at elevated prices on a sporadic basis, doesn't convince me so far.
Cheers, MMK