IWC Mark XI

A navigator's watch for the Royal Air Force, protected against magnetic fields.

The Mark XI was made for navigators in the Royal Air Force and was used into the 1980s. The watches were checked carefully before they were issued. The design has influenced many later pilot's watches.

Materials: Steel, soft iron; hand-wound movement

Manufacture: Made in Schaffhausen; the movement sits in an inner case of soft iron.

The black dial with a triangle at twelve.

The arrow on the dial showing that the watch was military.

• Clocks and watches
• IWC Schaffhausen