Portal:Anniversaries/March 11
- 1693 — Jehan-Jacques Blancpain is born. He founded Blancpain, which remained in the family until 1932, became part of SSIH in 1961, and was re-started in 1981 by Jean-Claude Biver and Jacques Piguet.
- 2003 — The Prix Gaïa award is given to Antony G. Randall
- 2004 — The Prix Gaïa award is given to André Beyner