The Calibre 1887 is TAG Heuer’s first movement built “in-house”, based on the Seiko TC78 chronograph movement. TAG Heuer acquired the rights to the European production of the TC78 from Seiko Instruments and then began the process of re-engineering and putting together the resources and skills to produce this high-precision “in-house” watch movement.
The column wheel, which coordinates the start, stop and return-to-zero functions of the chronograph hand, functions like a gearbox. The smoothness and precision of its super-soft click start is a recognized element of high-end watchmaking excellence.
The Calibre 1887 is made of 320 components, and it’s equipped with a High Efficiency Rewinding (HER) system, acknowledged by watch experts as the world’s most efficient rewinding system because of its bidirectional automatic system, which delivers 30% more efficiency than the traditional inverter system used in most Swiss chronographs. The HER is also famous for its superior reliability and sturdiness.
DESCRIPTION
TAG Heuer Calibre 1887, Swiss Made. Automatic calibre.
Diameter: 29.3 mm (13 ”) – 39 rubies. Rapid date correction.
PERFORMANCE
Balance frequency: 28,800 vibrations per hour (4 Hz).
Power reserve: about 50 hours, about 40 hours when the chronograph is engaging.
DISPLAY
Hours — minutes — small seconds at 9 o’clock.
Chronograph minutes at 12 o’clock and chronograph hours at 6 o’clock. Date at 6 o’clock.
DECORATION
Oscillating mass: “Côtes de Genève”, engraved “TAG Heuer — Calibre 1887 — Swiss Made”.
The movement is new and working but it was never tested for precision. As for any other vintage or unused movement, a basic revision is recommended.
The article is sold as is – any other parts that are not mentioned in the description or shown in the photos are not included with this movement.
All the movements in our offers are original service or replacement parts meant to be used by professionals for watch servicing. The movements are handled and stored in different boxes or containers, operations that may affect their accuracy. These movements are supposed to be cleaned, oiled, timed or adjusted by a professional before fully corresponding to the manufacturer specifications.
