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Baume & Mercier Riviera 39mm Mens Watch Grey
Ref. BMM0A10720
Sits in Baume & Mercier’s upper tier here — more premium than three quarters of the Baume & Mercier watches we list, which start at £850.
Price range £850 to £18,000 across 34 Baume & Mercier watches in stock.The Riviera line turns fifty this year, and this 39mm reference marks the anniversary not with nostalgia but with a considered rethinking of what the original 1973 dodecagonal case could become. The twelve-sided shape and the four exposed screws remain — they are the design's signature — but the smoky grey sapphire dial now opens onto the movement beneath it, and the sandblasted titanium bezel sits against a gilded 5N PVD ring in a combination that reads as deliberately contemporary rather than commemorative. At 10.31mm thin, the watch sits closer to the wrist than its 100m rating might suggest, and 39mm is a diameter that genuinely suits a wide range of wrists without demanding one. The Baumatic BM13-1975A was developed with ValFleurier and brings five days of power reserve and meaningful magnetic resistance — practical qualities that make the calibre worth specifying rather than sourcing from a supplier shelf. The canvas-textured rubber strap changes without tools, which matters if you want to move between the grey rubber and something else without carrying a spring bar lever. The push-button clasp holds the integrated fit securely, and the strap swap takes seconds.
- Reference
- BMM0A10720
- Brand
- Baume & Mercier
- Collection
- Riviera
- Case size
- 39mm
- Case thickness
- 10.31mm
- Case material
- Stainless steel
- Case shape
- Octagonal
- Dial
- Grey
- Crystal
- Sapphire
- Movement
- Automatic
- Calibre
- BM13-1975A
- Functions
- Date
- Water resistance
- 100m
- Bracelet / strap
- Rubber strap
- Strap colour
- Grey
- Clasp
- Folding clasp
- Lume
- Super-LumiNova
- Retailer
- Mappin & Webb
Additional specifications
- Power reserve
- 120 hours
Learn more about Baume & Mercier
The Baume brothers opened a watchmaking business in Les Bois in the Swiss Jura in 1830, and built a substantial export operation through a London office. The company won significant honours at nineteenth-century observatory trials, including a record for a chronograph tourbillon at Kew that stood for years.
The modern company dates from 1918, when William Baume partnered with Paul Mercier in Geneva. Mercier brought design sensibility, and the house's Art Deco pieces of the 1920s — shaped cases, jewelled dials, and the Phi emblem representing the golden ratio — established a decorative direction it has largely kept.
Baume & Mercier was among the founding members of the Geneva Seal system and produced complications including minute repeaters and perpetual calendars in its earlier decades.
Its modern position is deliberately accessible: classical Swiss watchmaking at prices below the group's luxury tier, with the Clifton, Riviera, and Hampton collections covering round dress watches, integrated-bracelet sports watches, and rectangular Art Deco shapes respectively. The Riviera, introduced in 1973, was among the first steel luxury sports watches with an integrated bracelet, arriving a year after the Royal Oak.
The house has been part of Richemont since the group's formation, and produces around two hundred thousand watches annually.
- 1830
- The Baume brothers begin watchmaking in Les Bois.
- 1892
- A Kew observatory record is set with a chronograph tourbillon.
- 1918
- William Baume and Paul Mercier partner in Geneva.
- 1973
- The twelve-sided Riviera launches.
Also in 4 collections
This watch appears in the Baume & Mercier Riviera range (14), Stainless Steel Watches (2,624), Automatic Watches (1,472) and Grey Dial Watches (217).
What the specifications mean
A mechanical watch for everyday wear.
Strengths
- 100m water resistance covers swimming and watersports
- 39mm suits most wrists
- Sapphire crystal, which resists scratching
- 120-hour reserve survives a weekend off the wrist
- Luminous hands and markers for low light
Baume & Mercier Riviera alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | BMM0A10720 | L38021536 | 01 400 7778 7155-07 7 20 01TLC |
|---|---|---|---|
| Price | £3,950 | £3,900 | £3,500 |
| Case size | 39mm | 39mm | 39mm |
| Water resistance | 100m | 100m | 100m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Rubber strap | Titanium bracelet | Titanium bracelet |
| Power reserve | 120 hours | 72 hours | 120 hours |
| This watch | Closely matched | Closely matched |
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 100m it is rated for swimming and snorkelling, though not for diving.
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 120 hours fully wound — enough to sit off the wrist over a weekend and still be running.
Is it a men's or women's watch?
Listed as men's, though at 39mm it sits in the range that suits anyone.
Cheapest place to buy
Mappin & Webb is the only UK retailer we track stocking this reference new, at £3,950. There is nothing to compare it against today.
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