A few days ago we found a glass negative where our grandfather, Johan Grönefeld, is sitting at his watchmakers bench. His favorite violin and a lovely watchmakers lathe are also in this picture. This photograph taken arround 1912. Our father Sjef Grönefeld continued Johan's business in the late 60's. Bart and Tim continued this unbroken watchmaking family history that is exceptionally rare to find anywhere in the world today.