A good friend of mine told me, words have been long circulating inside the Rolex watchsmith and seller community that there is such a book. Issued by Rolex S.A. for every authorized service centre in the world (Rolex Service Center). So even a reputable Rolex dealer won't even know of its existence, only the main service watchsmith.
It's big and encyclopedic - functions as a reference for authenticating a genuine Rolex, down to the tiniest part visible. The logical fact is that Rolex does offer and charge you for such authentication service, they have to read something as reference, right?
Rumors said it in my local town that one guy actually own one photocopied bundle (don't ask me how he got it). Ridiculous as it may sounds, nobody have ever seen it as any queries will be almost habitually denied by the guy - a risk of lawsuit or legal breach to be ducked from perhaps? But the thing is this (old) guy can built you the best 'Bangkok Specials' there is (if you have the dough that is) and his knowledge is almost encyclopedic - suspiciously and respectively...
Can anybody confirm that there is such a book? If it's real it would be such an asset to the community... ;-)
Thanks for looking.