MOON DISC

MOON DISC
20 different operations
20 different operations

Resulting in a unique tiny wonder of classic workmanship.

NO SHORTCUTS
NO SHORTCUTS

The stars are manually inlaid in gold and two solid 18 carat gold, mirror polished moons are fitted.

HONOURING TIMELESS TRADITION
HONOURING TIMELESS TRADITION

‘Grande complication’ watch with minute-repeating, perpetual calendar, split-seconds chronograph, and phases of the moon in an open-face gold case. Circa 1899.

The traditional function of displaying the phases of the moon by way of a disc is in industrial design for mass production generally made by printing the blue night-sky on a disc. The disc may be stamped with a relief to simulate engraving, or it may be gold plated.

The Urban Jürgensen Moon Disc is made by hand. The disc itself is crafted from mirror polished thermally blued steel, in which the stars are manually inlaid in gold and two solid 18 carat gold, mirror polished moons are fitted.

The disc initially undergoes mirror polishing, and recesses for the stars are punched or etched into the steel. Pure gold in powder form is then deposited into the cavities for the stars and melted into place to form a solid gold inlay. After another careful graining and polishing of the entire surface, it is thermally blued to obtain the unique Urban Jürgensen blue color.

Finally, the two solid gold moon discs with mirror polished surfaces are press-fitted into corresponding holes in the disc to complete the dual image of two sets of moons with stars.

It takes more than 20 different operations to create the Urban Jürgensen moon disc, and the result is a unique tiny wonder of classic workmanship which is rarely found in timepieces nowadays.

At Urban Jürgensen, it is a distinct expression of what we mean by Honouring Timeless Traditions.