Portal:Anniversaries/June 26
- 1801 — Abraham-Louis Breguet receives a patent for his régulateur à tourbilon.
- 1982 — Jack W. Heuer is forced to sell his family's namesake company, Heuer at the height of the quartz crisis.
- 2012 — The Fondation Qualité Fleurier / Fleurier Quality Foundation (FQF) adds "100% Manufactured in Switzerland" to the requirements of the label.