De Bethune
DB28xs Steel Wheels
$90,000
Limited edition of 25 pieces
Case with short floating lugs in black brushed zirconium with yellow titanium inserts.
Dial with a De Bethune microlight decoration.
Titanium balance wheel with white gold inserts De Bethune Patent (2004).
"De Bethune" balance-spring with flat terminal curve De Bethune Patent (2006).