Cartier Baignoire Watch, Small Model, Size 15, Quartz Move
11 % below RRP
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ℹ️ 1-month trend
Price change over the past 30 days. Shows the short-term market movement — relevant if you want to buy or sell soon.
ℹ️ 4-month trend
The central metric behind the momentum score. It filters out short-term swings and shows the true, medium-term market trend of this reference.
ℹ️ Volatility
Annualised price fluctuation. Below 10 % = very stable, 10–20 % = normal, above 20 % = volatile. With high volatility the price can change quickly — in both directions. Be cautious about buying without checking the current price.
ℹ️ Momentum score
ChronoCheck's own indicator from 0 to 100, calculated from the 4-month trend, volatility and market direction.
- Above 60 — Upward trend. Good time to sell, prices are rising.
- 40 – 60 — Neutral. Stable price level, no pressure to act.
- Below 40 — Downward trend. Wait or enter at a good price.
ℹ️ Investment Grade A/B/C/D
ChronoCheck's own rating for each reference. A 0–100 point scale, made up of four weighted components:
- Momentum (40 pts) — trend strength from the momentum score.
- Liquidity (25 pts) — number of active live listings.
- Stability (20 pts) — inverse volatility — the calmer, the better.
- Source robustness (15 pts) — number of independent market sources.
- A · 75+ Trend is right, liquidity good, data broad.
- B · 55–74 Solid, but one component weaker.
- C · 35–54 Average, volatility or market breadth weigh on it.
- D · below 35 Downward or too little data — a collector's piece.
Not investment advice. Pure data analysis from aggregated market sources.
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Technical data
Cartier Ref. WJBA0041 — Variants and collector names
Known as: Baignoire Petite, Bathtub Watch, Oval Cartier, Baignoire Small Size 15
Movement variants
- 057 (?–today)
Bezel variants
- WJBA0041-Bezel-RG-Diamonds
Dial variants
- WJBA0041-Dial-Silber — Roman numerals, no date magnifier, no date
Crystal variants
- Saphirglas-Baignoire-Small-31x23
Bracelet variants
- Baignoire Integriertes Gliederarmband 18K RG Size 15 Ref. WJBA0041-Bracelet-RG-Integrated-Size15
In the trade, the nickname sticks: Baignoire, French for bathtub, named for the oval case shape. Cartier launched the line in 1912, over a hundred years before the WJBA0041. Collectors also call this model the Bathtub Watch, or simply the Oval Cartier, and in the market you'll sometimes see it listed as Small Size 15, a nod to the compact Petite version with a case width of around 15 millimeters.
## What sets this reference apart
Under the dial sits Caliber 057, a quartz movement Cartier has used in its smaller Baignoire sizes for years. The dial comes in silver, classic and understated, while the bezel is set in rose gold and paved with diamonds. That mix of precious metal and stone-setting pushes resale value up noticeably compared to the plain steel version, in my experience the premium often runs 20 to 30 percent.
## What I check on the WJBA0041
With the WJBA0041, I start at the caseback: the reference number engraving should be laser-cut clean and even, on fakes it often looks faint or unevenly deep. Just as important is the diamond setting on the bezel, counterfeiters cut corners on stone size and setting quality, while genuine Cartier stones sit precisely and uniformly sized. Caliber 057 gives itself away too, on replicas the seconds hand often ticks jerkily instead of moving with the smooth, steady beat of a real Cartier quartz movement.
Brand profile: Cartier
Cartier watches (Santos, Tank, Ballon Bleu) are popular targets for counterfeiters. The distinctive design (Roman numerals, blue sword hands) is recognizable — but also easy to copy.
- Sapphire cabochon crown: on genuine pieces it's SET INTO THE METAL (bezel-set); on fakes it's usually GLUED. Test: loupe — adhesive residue around the edge = fake.
- Bracelet screws: genuine Cartier bracelets ALWAYS have visible screw slots. Pins instead = fake.
- 'Swiss Made' at 6 o'clock: MICROPRINTED directly beneath the 6 o'clock marker. Fakes often omit it or print it crooked.
- Guilloché pattern: under 10x magnification, EXACTLY parallel and uniformly deep. Irregularities = fake.
Serial number format: Cartier serial numbers: alphanumeric, on the case back. Older models: number located between the crystal ring and the case. New purchases come with a Cartier passport.
Further sources
Buying guide: Cartier Baignoire Watch, Small Model, Size 15, Quartz Move
Market situation and price range
At $33,482 the Baignoire Watch, Small Model, Size 15, Quartz Move sits in a segment where first owners sell regularly — clean pieces with box and papers are not uncommon. The jump from "good" to "very good" usually costs 1,000 to 2,000 euros more at purchase. You get that premium back on resale if the condition is preserved.
What to look out for when buying?
- Authenticity: The serial number and reference on the case must match the papers. A professional authenticity check of the Cartier Baignoire Watch, Small Model, Size 15, Quartz Move reliably rules out counterfeits.
- Condition: Check scratches on the case and bezel — professional refurbishment can leave traces.
- Service history: A documented service by the manufacturer or a certified watchmaker increases the value.
- Scope of delivery: Box, papers and warranty card make a noticeable price difference on the Baignoire Watch, Small Model, Size 15, Quartz Move.
- Independent certification: The CPS-52 standard covers 52 checkpoints — from the serial number and the timing machine to water resistance. The result is secured on the blockchain and can be verified at any time.
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