Introducing the Jürgensen 1745 Collection, Urban Jürgensen presents Reference 1741 in Platinum with Perpetual calendar, leap year indicator, moon phase and central seconds.
Reference 1741 is equipped with a Grenage dial for the first time in more than 100 years and reintroduces the almost forgotten craft which is hardly used or even known today.
It is handcrafted, delicate and time-consuming, but the final result justifies the difficulties of creating the Grenage Dial. The Reference 1741 dial is hand made using Grenage dial making and fitted with the Urban Jürgensen white gold Arabic appliques. The moon disk takes more than 20 different operations to create, and the result is a unique tiny wonder of classic workmanship which is rarely found in timepieces nowadays.
The elegant profile of convex and concave curves of the case consists of 3 main pieces; the middle case with individually soldered teardrop lugs, the top bezel houses the domed sapphire crystal, and the screw back with a flat sapphire crystal.
Ref 1741 PT
Urban Jürgensen P4 QP SC
Swiss Lever Escapement
Perpetual Calendar, day, date, month, moon phase, leap year
Hours, minutes, central seconds
Adjusted to temperature, isochronism in five (5) positions
Autonomy: 60 hours
Frequency: 21’600 V/h (3 Hz)
Twenty-four (24) jewels
Diameter: 32.00 mm
Thickness: 6.85 mm
41 mm Round 3-piece case, with a convex bezel
Individually soldered teardrop lugs
Domed sapphire crystal
Open back with flat sapphire crystal
Water resistant 3 ATM
Single piece solid silver handmade Grenage dial
Urban Jürgensen domed White Gold Arabic numerals
Hand lacquered engraved dial
Hand made in thermally blued steel and Yellow Gold
Click mounted diamond polished eye in Yellow Gold
Length 115/75mm, width 21/16
Custom made sizes available on request
Semi-matt black, brown or blue
Other colours available on request
Buckle: Classic C-buckle in Platinum, stamped Urban Jürgensen. Folding buckle optional
Grenage dials were originated in the late 1800s. It is a dial making technique that is rarely used these days – and it’s easy to understand why. It requires such a delicate balance of skill, patience, and hours of concentration that most have abandoned grenage without a backward look – but we believe the end result is worth it.
It is a distinctively handmade process dial by dial. It is said the dial represents 80% of the watch, and we believe that makes it worthy of a handmade approach. Each dial begins with a plate of solid fine silver given ultra-fine engravings of numbers and markings. The engravings are hand filled with lacquer, and after hardening is diamond paper-polished to leave its residue in the grooves.
The grenage layer is then built step by step as a secret mix of silver, salts and other ingredients is hand-brushed onto the individual dial. By electrochemical reaction, the surface emerges as a beautiful pearled finish; a silvery frosty surface with unique depth and granularity.
Hands: Urban Jürgensen hands are handmade. The arms of the hands are cut from selected steel and hand finished to perfect shape and fit. Gold hands are made from solid gold. After careful polishing with increasingly fine grain diamond paper, and mirror polishing by use of shape fitted secret types of dried wood, the arms are thermally blued to arrive at the specified Urban Jürgensen blue colour. The eye of the hour hand is a concentrically diamond polished solid gold insert, held in place by the sheer accuracy of the fit. The arms are carefully riveted to the diamond polished solid gold centre canons.
Arabic numeral appliques: The White Gold Urban Jürgensen Arabic numeral appliques require two separate cutting processes, and are carefully hand polished cabochons and manually placed, they adopt an elegant cursive typography, typical of the 1930s.
Moon Disc: Each disc is made by hand from carefully selected and treated steel – thermally-blued and mirror-polished. Recesses for inlays are punched or etched into the steel, then pure gold (in powder form) is carefully placed into the cavities, and melted to create solid gold stars. The entire surface is re-polished and heat treated to create the famous urban blue colour before two solid gold moon discs are press fitted.
The teardrop lugs on Urban Jürgensen’s Ref 1140 time pieces have been individually forged, heat treated, hand polished and individually soldered on to the watch case in a way which makes the soldering line invisible for the naked eye. The forging process requires between 5 and 8 cycles where little by little the final form of a paired tear drop set is forged into shape under the pressure of 50 tons. To prevent the lugs becoming brittle, it is necessary after each forging cycle to release the tension in the metal through a slow heat treatment at around 800 degrees with a cool off period. The heat levels needed to solder the lugs to the case is close to the melting point of the used metal, and as such it is an extremely delicate process only mastered by experienced craftsmen. The entire process takes several days, and is rarely used nowadays due to the high costs of handcrafting.
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