Jaeger Lecoultre
overseas dato-compax triple quantième - Valjoux 72C

Vintage LeCoultre chronograph with triple calendar complication, "Overseas Tri-Compax", circa 1947.

Vintage collector watch “Overseas Tri-Compax” with triple calendar signed LeCoultre. A highly complicated timepiece created by Jaeger-LeCoultre in 1947. This classic collector’s watch is a high-end mechanical chronograph with three sub-dials, hence the “Tri-Compax” designation. It also features a triple calendar with three date indications: the first is a central date hand with a red arrow tip that points to a blue railway-style date track (1–31) encircling the dial — a design that would later inspire Rolex’s GMT hand. The second calendar shows the day of the week in the left window above the center axis. The third indicates the month and appears in the right window. These calendar indications are in French and printed in red — a rare design choice for the period, which would inspire other top-tier watchmakers to highlight flagship models this way.

The Tri-Compax chronograph layout includes a continuous small seconds sub-dial at 9 o’clock, marked with a circular railway track. At 3 o’clock is the 30-minute counter, similarly laid out but graduated by minute. At 6 o’clock, an hour totalizer spans 12 hours, set in a recessed disc with alternating black markings for full and half-hour intervals. As with many high-end mid-century watches, the calendar indicators are in French.

The time is read via three hands, including a central seconds hand. The softly brushed dial features raised dots to mark the hours, with an applied numeral at 12. Around the outer edge, a black railway-style minute track numbered from 0 to 60 enables precise reading down to 1/20th of a second thanks to its five subdivisions per second.

This refined level of display is made possible by the use of the Valjoux 72C calibre — a highly respected and reliable chronograph movement. Its quality led many prestigious watchmakers to adopt it in their signature models. Rolex would later use it in the Dato Compax ref. 6236 (nicknamed the "Jean-Claude Killy"), in the Oyster Perpetual "Stelline" 6002 "Dark-Star", and in the early Cosmograph Daytona models. First produced in 1946, the column wheel-equipped Valjoux 72C remained in production until 1974. It beats at 18,000 vph, has 17 jewels, a balance with swan neck regulator, and offers a 48-hour power reserve. Only around 1,300 units of this movement were made, with Rolex claiming the majority. Jaeger-LeCoultre received fewer than 50 — making this watch a near-unique collector’s piece.

As a historical anecdote, Jaeger-LeCoultre chose to sign this watch “LeCoultre” only, omitting “Jaeger” due to the Germanic sound of the name. In a post-war context, this was a strategic decision to improve commercial appeal in French- and English-speaking markets. The watch was a major success at launch and went on to inspire many others. Rolex notably took it as a reference for the Dato Compax 6036 and 6236 (in steel), and the 4767 and 4768 (in precious metals), eventually evolving into the Cosmograph Daytona — which continued to use the Valjoux 72C for several years.

Learn more about the history of watch brands and their iconic models on our Watch History page.