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WorldTempus Newsletter
Editorial - Chronometers and the COSC decoded

Editorial Chronometers and the COSC decoded

The price and value of a COSC certification in the current market, plus a new competition and two more WorldTempus unique pieces.

A COSC chronometer certification has long been assurance of precision for a watch, but came with an additional cost. This is increasingly being absorbed by the brands and COSC-certified chronometers are now available for under €2,000. Today, David Chokron considers the evolution of the certification and explains why, as of this year, the COSC no longer provides a breakdown of certifications by brand.

In anticipation of the watchmakers’ holidays from mid-July to mid-August, we have extended our regular monthly competition to two months for the period of July and August. You can win an Anonimo Nautilo watch worth 1,800 Swiss francs by simply answering three questions about the brand correctly. Our daily summer competitions also continue and you can find the latest prizes on offer here.

This week we present two more of the unique pieces that we are offering in conjunction with a number of luxury watch brands. Discover tomorrow the Ulysse Nardin Marine Tourbillon, which is among the most affordable tourbillons currently on the market, and a Hublot Classic Fusion in titanium on Friday.

After Dubai, Munich and London, Patek Philippe brings its huge travelling exhibition to the Big Apple this week. The Art of Watches Grand Exhibition opens this Thursday at Cipriani on 42nd Street and runs for just 11 days until 23rd July. Watch out for Ming Liu’s preview of the exhibition on Thursday, as well as a report later by Roberta Naas on the exclusive new Patek Philippe watches that will be presented at the exhibition.


Born in Italy, crafted in Switzerland. The history of Anonimo watches is unmistakably linked to the pioneering exploits of Italy’s naval divers and alpini militare.

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From the outset, Hublot has embodied design and innovation that differ markedly from the established watchmaking order. With the impetus provided by Jean-Claude Biver, by 2004 these values had...

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Patek Philippe enjoys outstanding renown and rare prestige, due to the constancy with which the Manufacture has applied its philosophy of excellence ever since it was founded.

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