Parallax 1912 Tourbillon


In October 2014 the horological brother Bart and Tim Grönefeld were laureated by the international jury of the Grand Prix d’Horlogerie de Genève. The Parallax Tourbillon was awarded “best tourbillon” in its class.

The Grönefeld Parallax Tourbillon 1912 features a “flying” tourbillon with a large central seconds hand, stop seconds, a power reserve- and winding-setting mechanism indicator.

The hand finished movement displays sophistication and craftsmanship at the very highest level.


Well-designed and impeccably executed tourbillons are particularly accurate timekeepers.

The flying tourbillon allows full appreciation of the concentric, rhythmic “breathing” of the balance hairspring, while ensuring high precision.

Bart and Tim Grönefeld further highlighted the tourbillon by raising it out of the movement and above the dial.

As with the immaculately finished movement bridges, the tourbillon cage is crafted in stainless steel. Three days are required just for the hand finishing of the tourbillon components.


The precision of the Parallax Tourbillon is evidenced by the large central seconds hand. Normally a central seconds hand requires a friction spring to prevent small fluttering caused by play in the gear train.
For the Parallax Tourbillon, the Grönefeld brothers developed the movement with an added pinion and wheel so that the energy-sapping friction spring is not required: A feature improving power transfer to the regulator and contributing to the precision and impressive power reserve of 72-hours.


In addition to the flying tourbillon and friction-spring-free central seconds, the Parallax Tourbillon has yet another innovative feature: rather than pulling the crown to set the time, which has the risk of damaging the fragile crown stem,
it is pressed.
An indicator on the dial displays the function selected: “W” for Winding or “S” for time setting. When the time setting function is selected, both tourbillon cage bridge and the central seconds hand automatically return to their respective 12 o’clock positions and stop (or hack) while the time is set.


Bart and Tim Grönefeld only use stainless steel bridges for their movements. As well as the superior hardness and durability of stainless steel compared to standard brass or nickel, the metal absolutely gleams when polished to a mirror finish.
And as stainless steel does not oxidize, the gleaming finish lasts and lasts.

Réalisation : NoPixel