
D-TIME1's original post invites the WatchProSite community to celebrate the artistry of exhibition casebacks, showcasing movements from Jaeger-LeCoultre, Omega, and others. This feature, often overlooked, provides a window into the intricate mechanical heart of a timepiece. The discussion that follows highlights why these transparent casebacks are cherished by collectors and enthusiasts alike, offering both aesthetic pleasure and a deeper appreciation for horological craftsmanship.



Common ETA base movement with additional chrono module but good finishing none the less. Taken more than 5 years ago.
Omega taking the guesswork out of admiring their movements 😁 I’ll try to dig a photo of the caliber 3120 on my AP Best Regards Hussam
I would tend to think that JLC should be way above but this does not seem to be the case actually
The back is a present from the Gods. Who it did design, i do not know, but it never bore.
That being said, all modern omegas mechanical movements have that lovely machine-applied clamshell finish, along with blackened screws and perlage at the bottom of the movement. I have no personal experience with JLC, so I’ll let others chime in
I jacked the movement, to showcase the weight-adjusted balance wheel
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