There are two versions, one made by MBW (expensive) and another less expensive version. I believe the difference in quality between the two is apparant
I owned the less expensive version (procured from TTK) and sold it - looking to procure the MBW version of this watch with Swiss 7750 from one of our dealers. Unfortunately, the dial with swiss made at 6 o'clock is no longer available in the MBW version. I believe that version (without the Swiss Made) is the watch that Puretime is offering as their more expensive version but other members may know better.
You could check Repgeek, as there is a thread from a member who did this exact upgrade recently using the MBW version and swiss made dial.
hxxp://www.repgeek.com/showthread.php?t=5915
The other caveat is that the seconds at 12 version is coming, according to Andrew, using A7750 in May.
Reese