Limited to just five pieces worldwide, the Corum Bubble Tourbillion is gem that few will ever experience, but those fortunate enough to possess it can buoyantly enjoy its uniqueness.  The convex sapphire crystal significantly distorts the dial, allowing the beholder to witness a different dial composition from any angle.The rose gold case tapers at the lugs, ensuring that the substantial case comfortably embraces the wearer, even if they have a smaller wrist.Guaranteed to be 100% authentic.Limited to just five piecesL6 - 397.100.55/0001 BG01Automatic Corum Calibre CO 397 can be enjoyed via the exhibition caseback.Watch only; the client who traded this in did not supply the box and papers.Original MSRP of around $134,000!The current strap will fit a 6-7.25" wrist. A larger one can be ordered from Corum if needed.All functions, including the tourbillion, day/night indicator, date indicator, and GMT are working as intended.  Watch is running well.•••Cosmetic Condition•••Very good overall condition. It is stunning on the wrist! The crystal is clean, and the strap looks great and has tons of life left. The rose gold surfaces only show minimal wear.It would be my pleasure to answer any additional questions you may have. A secure, reliable, transparent transaction is a top priority.Please check us out on FB or IG under The Marin Vault for reference purposes.Luxury timepiece trade-ins are welcomed!Policies:⁣* We will ship via FedEx Express with insurance and signature service. ⁣⁣* All photos are of the actual watch you will receive. Please excuse any dust particles that may appear in the hi-res shots.⁣⁣* Contact us before placing offers if you have fewer than 15 feedback ratings on eBay.⁣⁣* At this time, we are only shipping to the United States.⁣⁣* Serial numbers are obscured in photos for privacy reasons but are fully present on the merchandise in real life.⁣