1900 Bardon Tonneau
- Engine
- 1.2L opposed-piston single-cylinder, two crankshafts, dual flywheel, 4/5 hp

A rare 1900 Bardon Tonneau, powered by an opposed-piston single-cylinder engine of approximately 1,216 cc using the distinctive dual-crankshaft system developed by Louis Bardon at Puteaux. One of very few surviving examples from a marque that ceased production in 1903, this car was formerly held in the Malartre collection near Lyon. Its engine, chassis, and wheels have been restored, and a replacement body was constructed by the Swiss coachbuilder Langenthal of Berne. Certified by the Veteran Car Club of Great Britain as a 1900 vehicle, it qualifies for the London-to-Brighton Run.
Ownership
- —Auction saleSold €95,200 (≈ $105K)
- → 1976Acquisition unknownMusée de Rochetaillée-sur-Saône (Henri Malartre Collection)partial documentation
The car was part of Henri Malartre's collection at his museum near Lyon before being acquired in 1976.
- 1976 →Private saleCurrent vendorpartial documentation
Following acquisition from the Malartre museum, the engine, chassis, and wheels were restored, and a new body was fabricated by Swiss coachbuilder Langenthal of Berne.
Competition
No competition history extracted from the catalogue.
Maintenance & restoration
- 1978Inspection
Vehicle dated and certified by the Veteran Car Club of Great Britain as an authentic 1900-built car; certificate number 1458 issued.
Certification confirms eligibility for veteran car events including the annual London-to-Brighton Run.
- —RestorationLangenthal
Engine, chassis, and wheels were restored; the original body was absent or unusable and a new one was fabricated by coachbuilder Langenthal of Berne, Switzerland.
Coachwork component carried out by Langenthal, a Swiss firm established in 1888 and still active in commercial body building and historic coachwork repair. Date of restoration not precisely stated, but work occurred after the 1976 acquisition.
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