I started of lusting after a gen 6263 years ago, but alas, even then they were just too expensive. Today, they're even crazier in price (especially the Gen 1 exotic dial).
Over the years I've collected/sold and wore a bunch of different Gen Rolex's: Submariner, Daytona (modern) and GMT II for almost 20 years now.
I got the bug to get a 6263, but as I stated earlier, the Gen was just not in the cards. So I joined several replica watch forums and started to dig deeper.
I was not satisfied at all with what I saw coming from dealers (price range from $180 - $350). They just looked "off" to me.
The deeper I dug, the more it became evident that I would be looking into a Superfranken custom build. I contacted one of the well known "builders" on RWI and here's what we ended up with:
Gen hands
Gen crystal
Gen tube
Gen crown
Gen braclet - 78350 w/571 endlinks
Gen bezel
Gen insert
Gen mk2 pushers
Fully converted Valjoux 727
Custom case
Custom dial - specially aged
Originally, it had a Tiffany & Co. dial and a rep bezel. The T & C. dial caused WAY too much unwanted attention as that's basically a one-off watch and worth close to $1 million. So I sent it back to my builder for a standard dial and to install a gen bezel.