The Calibre 1887 is TAG Heuer’s first movement built entirely in-house, based on the design of the Seiko 6s37 chronograph movement. TAG Heuer acquired the rights to the European production of the 6s37 from Seiko Instruments and then began the process of re-engineering and putting together the resources and skills to produce this high-precision watch movement.
The Calibre 1887 prototype was called Calibre 18 but it never went into production under that name. In this kit, the movement is attached to a rare Carrera Calibre 18 (1887) dial – also a prototype, and it has the full set of corresponding watch hands. There’s a small area between 1:00 and 2:00 (marked on the last 2 photos) where there are some barely visible blemishes on the dial, probably the dial was bent and the marks are a result of a fix attempt.
DESCRIPTION
TAG Heuer Calibre 18 (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 9:00.
Chronograph: seconds by central hand, 30 minutes at 12:00, 12 hours at 6:00. Date opening at 6:00.
DECORATION
Oscillating mass: “Côtes de Genève”, engraved “TAG Heuer — Calibre 18 — Swiss Made”.
DIAL
Beige dial with three chronograph sub-dials displaying hours, minutes and small seconds counter at 9 o’clock. Hand-applied indexes. Date window at 6:00 position. Marked AUTOMATIC CHRONOGRAPH | CARRERA | CALIBRE 18 | SWISS MADE.
Ca. 35.4 mm diameter.
HANDS
Polished finishing silver surface with lume.
The movement has NO STEM.
The movement is new and working but it wasn’t 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.
