Portal:Anniversaries/April 12

1958 — Universal Geneve shows the Microtor at the Basel Fair, the first micro-rotor automatic winding movement.

1989 — The AHCI appears for the first time at BASEL 89.

1997 — Gérald Piaget, who founded the modern Piaget brand, dies at age 79.

2007 — Patek Philippe replaces the original 38 mm Aquanaut with the 40 mm Ref. 5167 at Baselworld

2007 — Seiko introduces the first Spring Drive chronograph at Baselworld.