The Prague astronomical clock is an astrolabe and most definitely the most famous, historically important time-measuring machine in the Czech republic, so it is an ideal source of inspiration for the anniversary model of wrist watches. If the famous astrolabe that has been said to had been created around the year 1410, does not have a round-figure birthday, then the creator of its look-alike in the form of wrist watches does. It celebrates 20 years since the rebirth of the brand PRIM in its company. Forty numbered pieces have been created in cases made of steel, with lunettes with yellow, rose or white gold. Four colourful variants have similar elements on their dials. It is the font of the numbers inspired by the Prague astronomical clock, both on the minute hand rotating on the outer circumference and on which the central hand points, and on the counter on position 12. There, a small hand shows the time. It is a combination of regulator and tourbillon. Its cage turns once in a minute on the position of 6 hours and the halo around it is completed with symbols of moon signs similar to those on the astrolabe from the 15th century. The minute hand passes by 10 indexes that portray 10-minute intervals with stones- diamonds, rubies and sapphires, which depends on the version of the watches. All that is completed with a tulip crown created by the designers of the company, with a stone on its top.
An aperture on the position of 6 hours allows for their owners to watch the work of the calibre Sea-Gull TY806 of the edition TY8 which offers in total 14 machines and finishes, including those with automatic winding or retrograde portrayal of time. The used machine has a manual winding, diameter 30 mm and height 5,1 mm. It is symbolic that the manufacturer chose tourbillon because they applaud the inventor of this royal complication, Abraham-Luis Bregeut, who exactly 220 years ago (1801) received a patent for his “wind.” Complication is protected by a hairspring of the machine against the Earth’s magnetism and positional errors. Triple celebration.
Ing. I. Sirota (Chief Editor of the magazine Hodinky a Šperky – Watches and Jewellery)