Jossip Wille turned a 50 euro profit into a Cartier specialty

He was sixteen, the watch was a 250 euro Omega from an Italian auction, and the lesson stuck. How Le Petit Suisse became the Cartier address in Ghent.

Words by The Worldwatch Desk7 min read4 August 2026

Jossip Wille of Le Petit Suisse
Jossip Wille of Le Petit Suisse

Jossip Wille's first trade made him fifty euros. He was sixteen, wanted a Seiko 5, and had Swiss grandparents. His grandfather insisted on Swiss-made, so Wille spent the summer of 2017 saving and reading. Then he found an auction in Italy and won an Omega Seamaster Cosmic for 250 euros. When it arrived, he realised it was worth more than he'd paid. He listed it, sold it for 300, and set himself a goal: keep trading until he could afford a 1,000 euro watch to keep.

Nearly a decade later the goal reads like a rounding error. Le Petit Suisse, founded in 2019, operates from Coupure Rechts in Ghent. Viewings by appointment. Watches in a bank vault. The book runs from Cartier and Patek Philippe to Universal Genève and Jaeger-LeCoultre, and the majority of it leaves Belgium. He works where he lives. He sells to the world.

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Still to come

  • The watch that changed his direction
  • How he reads a Tank
  • Ghent is not a disadvantage
  • Trust is the inventory
  • Dealer's notebook

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Le Petit Suisse

Jossip Wille, Founder, Le Petit Suisse

Specialty

Vintage Cartier: Tank, Santos Dumont Extra Plate, Santos Carrée

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