Question about the Royal Oak Dual Time Movement
I recently purchased new a Royal Oak Dual Time, absolutely love the watch. From what I have read, the movent is not an In House movement, but rather based on a JLC movement. I am a bit of a novice when it come to what is going on inside my watches, so what exactly does that mean? Did JLC make the movement, ship it to AP for them to install it? Was it just borrowed technology, but AP makes it all in house?Was there any innovation in terms if the movement on APs part? Basically, I am asking what is the story with this movement. Really any help or information would be greatly appretiated. I believe the movement is Cal.2329/2846 , but honestly, I have no idea what that is.

Seamaster Question -
Hello, all - New to the forum. Recently inherited this Seamaster and have been unable to find exact model/year without cracking it open. Any thoughts?

Hesalite scratch removal -- really bad
I'm either (1) SUPER hard on watch crystals, or (2) this Hesalite scratches awfully easily. With more than a dozen daily wearers, and with most of my watch time spend in an office, I'm very surprised at how bad this crystal looks. I know the pics make it look really bad due to the angle of the light. But please believe me: It looks that bad at pretty-much any angle.If I replace it with a new Hesalite, it'll only end up looking this bad again in a year.So, which should I do? -- give it to my omega boutique for a Sapphire replacement (if there is such a thing)? Or just keep it, & continuously use some kind of home remedy? THANKS FOR YOUR ADVICE!

3670A. There are 16... Who owns them?
What is the likelihood of seeing these for sale?Is it only auction or is it super collectors that put them away in the safe?How does one realistically dream of acquiring something that isn't available?I have seen Jean Claude Biver has one, where are the other 15?Just dreaming out loud:)And of course I wouldn't mention it without offering a picture as captured from hodinkee/Biver video

VERSUS: Stainless Steel and Two-Tone Datejust
Thirteenth edition of the VERSUS post/picture. What is VERSUS? Well, I thought it would be fun to compare two watches (and only those two watches) and discuss pros/cons by outlining the differences and getting folks' ideas/thoughts/opinions on TRF. We got folks here that have been collecting and studying these things for decades all the way to those who are just starting to venture into the crazy world of Rolex (and everyone in between). Therefore, it would be fun and educational!For this edition, we have a showdown of the classic Datejust. These are semi-modern references and the two most common configurations; the stainless steel reference 16234 and two-tone reference 16233.Which do you prefer and why?Previous VERSUS:1. VERSUS: Submariner 1680 v. 166102. VERSUS: Rolex Submariner and Sea-Dweller 16610LV and 1266003. VERSUS: Rolex Submariner 16610s4. VERSUS: Sea (Deepsea 116660) to Sky (Explorer 1016)5. VERSUS: Submariners Vintage and Modern6. VERSUS: Datejusts with Unique Dials7. VERS