24-Hours Automatic Movement
Limited luxury wrist version of the GMT Shepherd Gate Clock, since 1852 on the Observatory's Wall, Greenwich Prime Meridian, UK
The packaging is composed by a luxury wood box, with a material inspired to the Greenwich park trees, in the typical English brown oak wood.
*excl. shipping cost depending on country
In the year 1849, the engineer Charles Shepherd Junior (1830–1905) patented a system for controlling a network of master and slave clocks using an electric way, the galvanism. Shepherd installed the public clocks for the Great Exhibition in May 1851. By August 1852, he had built and installed the network of clocks and cables in the Royal Observatory, in Greenwich, London.
The Gate Clock originally indicated astronomical time, in which the counting of the 24 hours of each day starts at noon. The clock was changed in the 20th century to indicate Greenwich Mean Time (GMT), in which the counting of the 24 hours of each day starts at midnight. Currently, the Gate Clock continues to show Greenwich Mean Time, and it does not show daylight saving time.
A few meters behind the clock, pass the Greenwich Prime Meridian Line, based at the Royal Observatory. This meridian was established in London by Sir George Airy in 1851. By 1884, over two-thirds of all ships and tonnage used it as the reference meridian on their charts and maps.
Photo: The Shepherd Gate Clock mounted on the wall of the Royal Observatory in 1870
In October of that year, during the International Meridian Conference, this meridian was selected as the Official Prime Meridian of the world.The Greenwich Prime Meridian is still now the worldwide Time zone reference.
The original idea to create a wristwatch version of the Shepherd Clock, bornt in the summer of 2014, in London. During a visit of the Royal Observatory of Greenwich, they remained fascinated by the Shepherd gate clock and its history. That's why they decided to search for a wristwatch replica of this historical masterpiece.
To there great surprise, they found out that no one had ever made a wrist version of this clock, considered by many people the world's most popular GMT Clock. After a careful analysis, they realized there were several factors preventing an easy replica of this watch from being marketed. The first one is the particular dial and ring shape, both difficult to be properly executed in small dimensions. The second, but perhaps most important reason, is the movement: The clock has got a 24h movement with hours and minute in the main dial and seconds in the high positioned subdial. There are watches with the 24h movement mechanism in the market, but nobody with this very particular feature. Later on, during the design phase, they added the 12h movement version, to share with the twelve hours watch users the unique design of this famous clock.
Photo: The clock dial in 1910 (left) and after the 1981 repainting (right)
Characterized by a 24 hours and minutes hands on the main dial, plus the small second hands on the high subdial. The mechanism is a fully-automatic self winding type with the GTG logo engraved on it.
Each movement is tested in the Italian Assembly Department, responsible for the manufacturing of the watches and for the quality control.
Dimensions: 30.4 mm diameter and 7.4 mm thickness
The first design step consisted in defining a 3D cad watch-case that could maintain the original shape of the Shepherd Clock, with a luxury design that could exalt its character. For this reason, the case is linear, without shapes and with the crown in the bottom ( at "12 hours" in the 24h model).
The ring is probably the most particular and distinctive part of this watch. Its colored in black for the standard GTG model, as the original Shepherd one. To preserve the original layout, they decided to use the 316L Stainless Steel with Black IP coating, a modern treatment used from many of the most luxury watch manufacturer.
The next steps was to create prototypes in ABS material, with a stereo lithography 3D printer. This test was crucial in verifying the space required for the crown setting and the strap positions.
Another distinctive and particular element of the clock are the hands. they have made photo chemical milling prototypes of these ones as well.