Limited Edition of 33 Pieces. DuBois et fils Watch Chronograph Big Date Limited Edition DBF005-02. Understatement, luxury and elegance distinguish the highly limited time pieces by DuBois et fils. The craftsmanship of noble materials, utmost precision and highly limited models have always been essential components of the companys heritage. We continue this tradition in the firm belief that true luxury goes hand in hand with exclusive availability. DuBois et fils therefore makes a maximum of 99 timepieces for each model. The personal limited edition number gives the luxury watches their unmistakable DNA.