Cylinder - Tourbillon

A replacement crystal-glass winding cylinder for the Tourbillon series — the transparent sleeve that houses the watch carrier and through which the photo-optic rotation sensor reads. Sold as a service part for damaged or scratched units, or for collectors restoring the unit to factory clarity after years of service. Tourbillon-specific crystal cylinder. Not interchangeable with the Voyager/Futura winding cylinder, which uses a different mounting geometry and lacks the optical clarity required by the Tourbillon's photo-optic sensor. Verify the model generation against the original cylinder before ordering — the Tourbillon series has had multiple revisions over the years.