Encased in a pink gold double-ellipse case with a hinged case back, the present Daniel Roth perpetual calendar tourbillon features two semi-skeletonized dials. The front dial shows an hour and minute display with Roman numerals that sits on a grey transparent glass plate. The pink gold case and numerals resonate with the blued hands, generating a marvellous hue of champagne and bronze on the glassy dial. Separated by a delicate pink gold stain-finished bridge, one is exposed to an aperture at the 6 o’clock which reveals a phenomenal tourbillon in action, dancing in synchronized movement with the blued tri-sectioned second hands on top. The baseplate decorated with the signature 'filet sauté' guilloché decoration further accentuates the elegance of the wristwatch.

Like a hidden treasure chest, the most fascinating part of the watch lies behind the hinged case back on the back dial. The intricate mechanism can be admired through the semi-skeletonized dial and one is instantly stunned by the remarkable moon phases indication, and the perpetual calendar with the transparent display discs. The present watch also features 8-day power reserve (a significant increase from the 40 hours of the Tourbillon C187) that is displayed on the power reserve indicator through a fine aperture above the signature on the front dial. The present watch is numbered 6, indicating that it is an example from early production. This mesmerizing timepiece is truly a perfect testimony to Daniel Roth’s extraordinary craftsmanship, and should not be missed out by any watch enthusiasts.