Louis Erard x Massena LAB Le Chronographe Monopoussoir
William Massena, a collector who ran Antiquorum before founding Massena LAB, returns to Louis Erard with a chronograph that answers to a single pusher.
Louis Erard introduces Le Chronographe Monopoussoir Louis Erard x Massena LAB, the second collaboration between the two after Le Régulateur. It is limited to 178 pieces, with a rhodium-plated or a gilded dial.

One pusher starts, stops and resets the chronograph, and a single 30-minute totaliser sits on a separate dial at 12 o’clock. The outer flange and counter are rhodium-plated, with a circular satin finish and diamond-cut corners. The lower plate is grained, and the leaf-shaped hands are blued steel.
The look draws on the 18th- and 19th-century watchmaking that Massena wants to make accessible, while the automatic calibre inside is a 21st-century monopusher.
“To be successful,” says Massena, “a collaboration has to make sense.”
Here it comes down to one pusher and one counter.

The Basics
Brand: Louis Erard x Massena LAB
Model: Le Chronographe Monopoussoir Louis Erard x Massena LAB
Reference: 74239AA70.BVA103 (Silver); 74239AA71.BVA103 (Gold)
Diameter: 43mm
Case material: Stainless steel; see-through case back; domed sapphire crystal
Dial: Rhodium-plated flange and counter; grained lower plate, rhodium-plated (Silver) or 2N gilded (Gold); silver opaline counter centre
Water resistance: 5 bars (50 m/165 ft)
Strap: Black grained calf leather, blue grained calf lining; pin buckle
Limited edition: 178 pieces (78 Silver, 100 Gold)
The Movement
Calibre: Sellita SW500 MPCa
Functions: Hours, minutes; monopusher chronograph with 30-minute counter at 12 o’clock
Winding: Automatic
Power reserve: Around 48 hours
Images courtesy of Louis Erard.