Tudor Black Bay 54 M79000N
Specs, Market Price & Buying Guide
- The Tudor Black Bay 54 M79000N is the 37mm vintage-proportioned Black Bay: gilt no-date dial, snowflake hands, domed sapphire, and the in-house Calibre MT5400 with a 70-hour power reserve.
- Market range: roughly $3,300–$3,900 on the secondary market against a $4,575 retail price (verified Sep 19, 2026 — recheck before acting).
- Availability: in current production, and one of the easiest Tudors to buy — the deepest retail discount in the current Black Bay lineup.
Representative photo of the Black Bay dive line. Reference M79000N shares the gilt-dial, snowflake-hand layout shown for identification.
Market range $3,300–$3,900 · verified 2026-09-19
$4,575
Flat
Soft — gray market sits well under retail
Drifting down as retail rose and demand stayed thin
Editorial estimate compiled from public listings — ranges move weekly. Verified 2026-09-19.
Checked 2026-09-19: in current production (joined in 2026 by the blue M79000B). Little to no AD wait; gray-market unworn pieces trade at a clear discount to retail.
Full specifications
| Spec | Detail |
|---|---|
| Case | 37mm stainless steel, polished and satin-brushed |
| Lug-to-lug | ~46mm (editorial measurement — verify) |
| Thickness | 11.2mm — the slimmest current Black Bay |
| Lug width | 20mm |
| Movement | Tudor Manufacture Calibre MT5400, automatic, COSC chronometer |
| Power reserve | 70 hours |
| Crystal | Domed sapphire |
| Water resistance | 200m / 660ft, screw-down crown with Tudor rose |
| Bezel | Unidirectional 60-minute steel bezel, black aluminium insert, gilt scale |
| Bracelet | Three-link rivet-style steel bracelet with T-fit micro-adjust clasp |
| Dial | Black, domed, gilt minute track and text, snowflake hands, no date |
| Introduced | 2023 — a near-faithful revival of Tudor's first diver, the 1954 ref. 7922 |
How it wears, by wrist size
The sweet spot. This is the Black Bay that finally fits smaller wrists — short lugs, 11.2mm thin, no overhang.
Compact and tidy; wears like a vintage 36–38mm diver. If you want more presence, the BB58 fills the wrist further.
Proportionate but deliberately small — a vintage look, not a modern statement. Try the BB58 or BB41 for more wrist coverage.
Reads dainty. Choose the BB58, BB41 or Pelagos unless you specifically want the sub-vintage proportions.
Buy or skip?
Editorial take: 9/10 — the best-wearing Black Bay Tudor makes, and the only one you should never pay retail for.
The BB54 is the Black Bay distilled to its 1954 source: 37mm, gilt, no date, no fuss — with a COSC in-house movement, 200m of real water resistance and the best clasp in the business. Critics loved it and the market shrugged, which is precisely the opportunity: gray-market unworn pieces trade hundreds under retail, making this the value pick of the entire Tudor catalog. The only real compromise is conceptual — if 37mm reads small to you, no spec sheet will talk you out of it.
- You want a date window — the 54 is time-only, exactly like the 1954 original
- Your wrist is 7.5 inches plus and you want presence — buy the BB58 instead
- You need a GMT or timing bezel function beyond the dive scale
Available alternatives (Amazon-priced)
Even discounted, $3,500 is real money for a time-only dive watch. These alternatives deliver the vintage-diver brief at Amazon prices — clearly labeled, no pretense:
San Martin SN0116 vintage-style diver
The direct gilt-dial homage — domed sapphire, NH35 automatic and a fraction of the price.
Check Amazon price ↗Seiko Prospex SPB143
The 62MAS reissue — 40.5mm, 200m and genuinely vintage-flavored with real Seiko dive pedigree.
Check Amazon price ↗Oris Divers Sixty-Five 40
The Swiss mid-tier vintage diver — slim case, domed crystal, actual brand heritage.
Check Amazon price ↗Longines Legend Diver 39
Compressor-case elegance from a brand that was there in 1954 — twin crowns, 300m, COSC.
Check Amazon price ↗M79000N vs. its siblings
| Reference | Case | Movement | Power reserve | What changed |
|---|---|---|---|---|
| M79000N BB54 (this watch) | 37mm | Cal. MT5400 | 70h | The 1954-proportioned Black Bay — smallest, slimmest, no date |
| M79030N BB58 | 39mm | Cal. MT5400 | 70h | Same engine at 39mm with more dial colors and strap options |
| M25407N Pelagos 39 | 39mm titanium | Cal. MT5400 | 70h | The modern tool take — titanium, ceramic bezel, sunray dial |
Ownership costs
| Cost item | Detail |
|---|---|
| Service interval | Tudor suggests ~7–10 years; service on timing drift or moisture, whichever comes first |
| Typical service cost | $400–$600 at a Tudor service center (estimate — verify locally) |
| Insurance | Under most rider thresholds at ~$3.5k — add it to a policy once your collection total crosses $10K |
| Parts availability | Excellent — Tudor/Rolex service network supports current references worldwide |
Frequently asked questions
Is the Tudor Black Bay 54 discontinued?
No. As of our last check (Sep 19, 2026) the M79000N is in current production, and Tudor added a blue M79000B sibling in 2026. Production status changes — recheck before relying on this.
Black Bay 54 or Black Bay 58?
Same MT5400 movement, different wrist: the 54 is 37mm and 11.2mm thin with the cleaner 1954-style bezel; the 58 is 39mm with broader dial and strap options. Under a 7-inch wrist, take the 54. Over it, try both.
Should I pay retail for a BB54?
No — the 54 is the softest seller in the current Black Bay line, and unworn gray-market pieces routinely list hundreds under the $4,575 retail. Buy from a seller with box, papers and references.
Why doesn't the BB54 have a date?
Because the 1954 reference 7922 it recreates had none. The no-date dial is the point — perfect symmetry, and one less thing to set.
Is there a waitlist for the Black Bay 54?
Generally no — it is one of the easiest current Tudors to buy at an AD, and gray-market stock is deep at a discount.
What movement is in the Black Bay 54?
The Tudor Manufacture Calibre MT5400: automatic, COSC-certified, 70-hour power reserve — the same engine as the Black Bay 58 and Pelagos 39.
Where to buy safely
$4,575 retail with full warranty and zero risk — but know the same watch trades for less unworn one click away.
$3,300–$3,900 for unworn or near-mint pieces. Buy the seller: box/papers, recent references, escrow for anything wired.
Rarely worth it for a current-production Tudor — buyer's premium eats the discount.
Cheapest and riskiest. Meet at a watchmaker; check the T-fit clasp action and bezel alignment against known-good examples.