Worn & Wound
Hands-On: BA111OD’s Chapter 7 Skeleton Gets a Light and Airy Stainless Steel Build
I had heard the name but was not aware of the unforgettable spelling until I got a sample of my first BA111OD watch, the latest addition to the brand’s catalog: the Chapter 7 Skeleton. While BA111OD traces its roots back deep into the history of watchmaking, its modern incarnation has taken shape over the past seven years with several different chapters. One of the biggest evolutions we have seen in the brand’s contemporary catalog is in its movements. While early chapters got flack for keeping costs accessible with Chinese calibers, Chapter 3 incorporated the first Swiss caliber into the Swiss-based Maison’s lineup in 2022. The brand’s next installment, Chapter 4, continued to build on this trajectory with the BA111OD caliber BA.01. This movement was notably developed in collaboration with watchmaker Olivier Mory whose La Chaux de Fonds workshop has given rise to movements for brands across the industry, from Louis Erard to Yema. Then, BA111OD’s Chapter 5 went on to introduce the Maison’s first automatic chronograph thanks to the ETA Valjoux 7750. Next, Chapter Delta entered the lineup with a major shakeup thanks to another movement co-created with Olivier Mory, this time featuring a unique hypocycloidal mechanism. Instead of a standard central rotating hand, a satellite hour wheel rolls around a fixed central wheel. This creates a deltoid path where the hour dot naturally slows down and speeds up during its rotation cycle. Here, traditional circular minutes c...
