Nouvelle disposition du mécanisme des montres de toutes dimensions particulièrement applicable aux montres-bijoux et aux montres marchant 8 jours ot plus
January 21, 1889
CH88A/2 is a modification to CH88A, the Hebdomas patent by Irénee Aubry. This patent is closely related to the production Hebdomas watch, while the original design is very different.
This patent is often referred to as “patent 2” or “CH2” under the (mistaken) assumption that it was submitted before Patent CH88A. Some reports even suggest that Aubry was next in line behind Paul Perret on November 14, 1888, given that he received CH1A. But examination reveals that this was a modification to CH88 and was likely submitted after the November 19, 1888 date. This explains why it was approved on January 21, 1889 while CH88 was published on January 10. The actual Patent number 2 was an embroidery machine created by F. Saurer & Söhne.
