I bought a Yuki 1665 caseback for my great white awhile back from a good member here.
The MBW caseback was for the red SeaDweller and the new Yuki is the correct one. It only took 3-4 days to make it from the UK to NYC, but it's been sitting there since the 13th I emailed them yesterday and it showed up today
Its a small upgrade, but having the wrong caseback bothered me. It's funny how the longer your into the rep hobby.. the little details bother you more and more. I'm sure you senior members know this all too well.
The Yuki threads smoother than the original does.
Anyway just a few quick pics: