Tourbillon Cylindrique Geospheres Vasco da Gama Limited Edition 18
Revolving around its axis once a minute, the tourbillon is driven by a cylindrical hairspring. Each of the spring's individual turns is wound on top of the other and is of equal diameter, thus not increasing in width like conventional balance springs wound side by side. This eliminates the slight eccentricity of the centre of gravity - crucial the regularity of the watch's rate. The cylin.drical spring is manufactured and regulated entirely in house in the Montblanc Manufacture - a rare expertise only few manufactures possess.
The horological creativity evidenced by the Tourbillon Cylindrique Geosphères and its cylindrical balance spring also characterises the three-dimensional dial of this timepiece. Under the cylindrical tourbillon with a double-infinity bridge shaped like two overlapping horizontal eights, the central hour and minute hands display the local time - above the spectacular scenery of the double worldtime indication.
Connecting the Northern and Southern hemispheres - as Vasco da Gama did with his journey to India - worldtime is displayed on two three-dimensional globes with hand-painted "peinture miniature" and day/night indications. Two discs with 24 time zones simultaneously revolve around the two fixed globes. They are covered by two sapphire crystal spheres, which show - synchronized with the two worldtime discs - the course of day and night around the world. All three - local time, hometime and worldtime - are set together via the crown. Without losing the minutes the local time can be adjusted with a pusher at 8 o'clock.
Montblanc Heritage Chronometrie Quantieme Complet Vasco da Gama
Well balance,d 40mm, full calendar (have to change the date manually when the month has only 30 days). The moon phase is accompanied by starry sky of southern hemisphere. Calendar date is very easy to read. It runs on an automatic movement certified by Montblanc Laboratory Test 500. It comes on an alligator skin strap made in Italy. There is Vasco da Gama's Flagship São Gabriel and his signature on the display case-back.
Editor: Bhanu Chopra (excerpts from Montblanc press kit)
Photo: Scott Sitkeiwitz