As part of its ww.tc collection, which indicates the time around the world, Girard-Perregaux introduces an exceptional limited series dedicated to John Harrison, one of the greatest British watchmakers.
This exceptional timepiece depicts the journey undertaken by John Harrison's son William from Portsmouth, England, to Port Royal, Jamaica, against a map of the Atlantic Ocean. The trip lasted from November 1761 to March 1762 and was intended to test the reliability of the H-4 timepiece, developed to calculate longitude.
The dial of the ww.tc John Harrison offers a superb example of delicate champlevé enamel, produced in the enamelling workshop of the Girard-Perregaux Manufacture.
Universal time, as distinct from local time, can be instantly read off from the blue/white hours ring using the rhodium-plated leaf-shaped minute hand.
The transparent case-back reveals the Girard-Perregaux 033G0 automatic calibre, which is widely recognised for the excellence and reliability of its construction. It is fitted with an ingenious coupling mechanism that activates the bicoloured ring indicating the time in 24 time zones. As an ultimate tribute to this fabulous journey in watchmaking history, the pink gold oscillating weight is engraved with a parchment bearing the dates on which the H-4 started and finished its Atlantic crossing.
The ww.tc John Harrison is available in a limited series of 50 individually numbered timepieces.