One of the Swiss parts in Le Locle went to the family of Paul Girard, the business in Russia was expropriated in 1918 due to the October Revolution.

[6] He learned the basic watchmaking craftsmanship from his father Erhard, and continued his studies in Le Locle, Switzerland after 1824.

[3] In 1848, Heinrich Moser returned to his hometown of Schaffhausen and established a watch factory there to supply his business.

Heinrich Moser died on 23 October 1874 and the company was sold to the respective Managing Directors in Switzerland and Russia since none of his heirs was willing to lead the business.

The hairspring was developed jointly with H. Moser & Cie.'s associate company Precision Engineering AG in Schaffhausen.

[15] In 2022 the Pioneer Cylindrical Tourbillon Skeleton reference 3811-1200 won the tourbillion of the year at the Grand Prix d’Horlogerie de Genève.