Dr No[Moderator Omega - Wristscan]
37637
The leviathan Graham . . .
. . . and Melvyn (twice!) owned was really a different genus, Nilo. The manual winding movement in that iteration was derived from a Unitas 6498 ébauche.
I was extremely close to getting one of the 36 mm versions . . .
. . . which was a perfect fit on my wrist. I held off at the time over seesawing between this and a Grand Seiko, plus a few others (including the Milgauss), but ended up committing to the Zenith New Vintage 1969 instead. As it turned out, the Zenith departed and a Grand Seiko entered, but I still have a hankering for a Rail.
Now that Omega has produced a fitting movement, and could conceivably issue a manual winding calendar-less movement, I'm content to wait until a third generation is unveiled. I'm betting on next year!
Art