1969 Longines Diver Chronograph Regatta ref. 8224-4, manual winding cal. Valjoux 72, 44mm. case and internal rotating bezel, this watch was re-edited recently and is very much in vogue now.

The Valjoux 72 is a three register column wheel manual wind chronograph movement which traces its origins back to the 1930s. The V72 was used in the Daytona Paul Newman and many other high end watches, but also in some lesser known brands; expect to pay a premium price for watches with this rare and celebrated movement.
Alone, it is worth more them US$500, often used as spare parts for more expensive watches, and I go further, an unmarked Valjoux 72 can be signed and turned into a Rolex, Breitling, Heuer, Jaeger and others, so be careful with identification.

Longines was founded in 1832, its winged hourglass logo is the oldest registered trademark for a watchmaker.
Longines provided timers used at the first modern Olympics in 1896.
In 1899, a Longines watch went to the North Pole with the Arctic explorer Luigi Amedeo of Savoy.
Charles Lindbergh, after his transatlantic flight, designed a pilot watch to help with air navigation. Built to his specifications, the Longines hour angle was introduced in 1931 and it is still produced today.
The company began to produce military issue watches for the second World War, most for the European forces.
Today Longines is owned by the Swatch Group.