When the “Horological Brothers,” Bart and Tim Grönefeld, decided to embark on a career in watchmaking, they initially chose to study in their native country, before completing their training in Switzerland. Thereafter, they returned to the Netherlands to uphold the family tradition of watchmaking. In 1998, the Horological Brothers established their own independent atelier in Oldenzaal. Some years later, they...

Almost three years after the release of their multiple-award-winning 1941 Remontoire Bart and Tim Grönefeld are pleased to reveal their first automatically wound timepiece the 1941 Principia. The 'Philosophiæ Naturalis Principia Mathematica' often referred to as simply the Principia, is a body of work by Sir Isaac Newton, delivered in three books. Written in Latin, the Principia formulated the laws...