Source catalogue · individual objects
Object Catalogue
Individual objects described by auction houses, specialist dealers and collection catalogues. Attribution, dates and specifications remain source-reported unless independently established; rights clearance is pending.
Browse makers and their key pieces · Urban Jürgensen profile
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Wristwatch · Perpetual calendar watch
Urban Jürgensen Reference 2 'Prototype' in 18k yellow gold
This Urban Jürgensen Reference 2 'Prototype' wristwatch dates to 1996 and is cased in 18k yellow gold. Documented by Phillips for Geneva Watch Auction: XXIII as Lot 146, the perpetual calendar model was developed under Peter Baumberger and Derek Pratt. Source reporting indicates it houses a Frédéric Piguet calibre 71 movement fitted with a Lemania perpetual calendar module. The hand-decorated solid silver dial displays guilloché engine turning, clous-de-Paris patterning, a moon-phase aperture, and classic Observatoire-style hands. In place of a standard production serial number, the dial bears an applied cartouche marked 'PROTO', matching movement number 000000 confirmed by company archives.
Full description
www.phillips.com · 146
Pocket watch · Tourbillon & karrusel watch
Derek Pratt for Urban Jürgensen Oval Pocket Watch
The Derek Pratt Oval Pocket Watch was conceived and handmade by English watchmaker Derek Pratt for Urban Jürgensen & Sønner. Begun in 1982 and completed around 2005, the source reports that the piece is officially titled the Detent Escapement Tourbillon with Remontoire in an oval case. It features a gilt oval movement fitted with a one-minute flying tourbillon, an Earnshaw-style spring-detent escapement, and a remontoire integrated directly into the carriage. Its solid silver engine-turned dial displays hours, minutes, overlapping subsidiary seconds, a moon phase aperture at 12 o'clock, a power reserve indicator, and a thermometer. The piece is housed in a platinum case with final movement finishing executed by Kari Voutilainen.
Full description
www.phillips.com · 40
Marine chronometer · Deck watch & deck chronometer
Louis Urban Jurgensen Deck Chronometer No. 47
This deck chronometer, numbered 47, is attributed to Louis Urban Jurgensen of Kiobenhann (Copenhagen) and dates to circa 1852. Designed with a 60-hour power reserve, it is housed in a three-body mahogany deck-watch style box accompanied by a brass bowl with a screwed bezel. The timepiece features a frosted and silvered dial with Roman numerals, subsidiary seconds, and an up-and-down power reserve scale, all indicated by gilt brass spade hands. The movement is a frosted gilt brass three-quarter plate construction, incorporating cylindrical pillars secured by screws and a fusee with chain and maintaining power. The barrel passes through the back plate and is secured by a bridge. Regulation is achieved through an Earnshaw-type spring detent escapement, a two-arm compensation balance featuring cylindrical weights and timing screws, and a free-sprung helical balance spring fitted with terminal curves. The piece is signed on the dial, movement, and the mahogany box.
Full description
catalog.antiquorum.swiss · 219