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It no doubt has something to do with its voluptuous proportions, the way it oozes class and the unconventional interpretation of the tourbillon escapement – in this case a seemingly “living 12”, against a deep black back- drop. The Portuguese Tourbillon Mystere has now metamorphosed into the IWC Portuguese Tourbillon Mystere Retrograde_ IWC Portuguese_TWC watches and features a date display that reverts to its original position at the end of the month: not only a technically interesting adjunct but also a feature that increases its every- day practicality. The pleasure of beholding an IWC Watch Reference 5044 on a daily basis, unfortunately, will be a rare one, limited to the lucky owners of 500 watches in red gold with a silver-plated dial and of 250 in platinum with a ruthenium black dial.

This, simply because the manufacture and assembly of a tourbillon – a rotating cage encapsulating the entire escapement – is one of the most demanding watch making exploits of them all. A small team of master watchmakers assemble these exceptional movements, together with the tourbillon, in their entirety, from the tiniest arbor to the hands traversing the dial. They precision- adjust balances to perfection using weight screws or tiny gold shims and finally, when the movement is finished to their satisfaction, secure it in its case. Watchmaking at this supreme level has its price, in the form of the enormous number of working hours. But in terms of precision, the result – as the watchmakers who master the necessary skills would themselves swear – can be compared with no other complication.

The watch that has been referred to as“homage to the Year of the Portuguese” in 2010 and bears the suffix “Retrograde” differs from the  IWC Portuguese Tourbillon Mystere Retrograde_ IWC Portuguese_TWC watches mainly in the eye-catching display that replaces the small seconds. Extending over the lower left-hand section of the generously proportioned dial (the watch is an imposing 44.2 mm in diameter) is a scale for the Retrograde date display, which has been integrated into the seven-day 51900-calibre movement. On reaching the end of months with 31 days – January, March, May, July, August, October and December – the date indicator automatically reverts to the first of the next month.

Technical Datas

Portuguese Tourbillon Mystère Rétrograde

Ref. IW5044

Features

Mechanical IWC-manufactured movement with Pellaton winding system and seven-day power reserve, retrograde date display, flying minute tourbillon with 81 parts, Breguet spring, rotor with 18 ct yellow gold medallion; red gold variant limited to 500 pieces, platinum variant limited to 250 pieces

Movement

Calibre: 51900

Beats : 19,800 / h

Jewels : 44

Power reserve : 7 days (168 h)

Winding : automatic

Tourbillon weight : 0.433 g

Case

Materials : watch in 18 ct red gold with silver-plated dial and dark brown alligator leather strap, folding clasp in 18 ct red gold ; watch in platinum with ruthenium-black dial and black alligator leather strap, folding clasp in platinum

Glass : sapphire, convex, antireflective coating on both sides

Back : see-through sapphire-glass

Water-resistant : 3 bar

Diameter : 44.2 mm

Height : 15.5 mm

Ref. IW5044

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