Phillips will offer Cartier’s Portique n° 4 mysterious clock on 8 November 2026 in Geneva, lot 220 of the Geneva Watch Auction: XXIV. Created in 1924, the Art Deco piece is estimated at CHF 1.8 million to CHF 3.6 million; only six examples were made, and this one is the only hexagonal version.
Why it matters (interpretation): This is one of the most significant Cartier clock appearances at auction in years, with a seven-figure estimate and exceptionally rare provenance. Strong interest could reinforce demand for important early Cartier decorative clocks and raise the market profile of the mysterious pendule category.