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Louis Erard Le Chronographe Monopoussoir x Massena Lab Limited Edition 43mm Unisex Watch Silver
Ref. 74239AA70.BVA103
Sits in Louis Erard’s upper tier here — more premium than three quarters of the Louis Erard watches we list, which start at £1,975.
Price range £1,975 to £17,500 across 31 Louis Erard watches in stock.Massena LAB's second collaboration with Louis Erard, limited to 178 pieces, begins with a question of mechanism: how to build a monopusher chronograph that operates through the crown itself rather than a separate pusher. The answer is a cam-operated Sellita SW500 MPCa, derived from the robust architecture of the Valjoux 7750, with a custom crown bearing the Massena LAB logo serving as the single control point for the complication. It is a clean solution to an old problem. The dial is where the nineteenth-century references accumulate: a grained rhodium-plated base plate, a silver opaline 30-minute counter sitting at twelve, and a circular satin-finished outer flange that reads as a technical drawing brought to metal. Against that, the case is unambiguously contemporary — high-polish stainless steel at 43mm with a 15.7mm thickness that gives the watch genuine presence on the wrist rather than the low profile a vintage-coded dial might lead you to expect. The 50.4mm lug-to-lug measurement means fit will depend on the wearer, but on those for whom it works the watch makes a clear case for itself: historical surface, entirely modern construction, operated through a single point of contact.
- Reference
- 74239AA70.BVA103
- Brand
- Louis Erard
- Case size
- 43mm
- Case thickness
- 15.7mm
- Lug width
- 22mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Silver
- Crystal
- Sapphire
- Movement
- Automatic
- Calibre
- Sellita SW500 MPCa
- Functions
- Chronograph
- Water resistance
- 50m
- Bracelet / strap
- Leather strap
- Strap colour
- Blue
- Clasp
- Buckle
- Lume
- Luminous
- Retailer
- Goldsmiths
Additional specifications
- Lug-to-lug
- 50.4mm
- Power reserve
- 48 hours
- Origin
- Swiss made
Manufacturer’s guarantee
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Showering yes, swimming no. 50m covers splashes and brief immersion, but a swimming stroke generates well above the pressure that figure describes.
Will the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Does it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
How long does it run for when it's not worn?
About 48 hours fully wound — enough to survive a night off the wrist, but not a full weekend.
What size strap does it take?
22mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 50.4mm, which suits wrists from roughly 17.5cm (7 inches) upward.
Lug-to-lug decides fit more than case diameter does.
Is it a men's or women's watch?
Listed as unisex, and at this size it suits any wrist that takes the dimensions.
Cheapest place to buy
Goldsmiths is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
Who are Goldsmiths?
Goldsmiths has been selling watches in Britain since 1778 and is part of the Watches of Switzerland Group, which is listed on the London Stock Exchange. They are an authorised dealer, so a watch comes with the manufacturer’s own warranty.
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