Model spec database

Tudor Black Bay 58 M79030N

Specs, Market Price & Buying Guide

Last verified August 30, 2026Aug 30, 2026

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Fast answer

  • The Tudor Black Bay 58 ref. M79030N shrinks the Black Bay formula to 39mm with gilt accents, an aluminum bezel and the in-house MT5402 with 70 hours of reserve.
  • Retail is about $3,800 on bracelet; real-world prices run roughly $3,100-3,800 — discounts are available, unlike at Rolex.
  • Weak points: the aluminum bezel fades and scratches by design, no on-the-fly clasp adjustment, and a faux-rivet bracelet some find costume-y.
Tudor Black Bay style dive watch

The Black Bay formula: snowflake hands, big crown, no date — 1958 proportions.

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Market price

Market range $3,100-3,800 · verified August 30, 2026

Retail

$3,800

30-day trend

flat

90-day trend

flat

1-year trend

slightly down

The BB58 held strong through the 2022 correction and trades near retail — one of Tudor's best value-retainers. Navy-blue and 18k gold variants sit higher; pre-owned full sets from 2020-2022 start around $2,900.

Current Market AvailabilityAvailable at ADs — minor waits possible; gray market near retail

Reference specs

Full specifications

SpecDetail
ReferenceM79030N-0001
MovementTudor MT5402 in-house, COSC, 70h reserve
Case size39mm x 11.9mm thick; ~47mm lug-to-lug
Lug width20mm
CrystalDomed sapphire
Water resistance200m, screw-down crown
DialBlack with gilt printing and indexes, snowflake hands
BraceletSteel rivet-style with folding clasp; fabric and leather options
BezelUnidirectional, black anodized aluminum, gilt 60-minute scale

On the wrist

How it wears, by wrist size

Under 6 in

Very good — the 39mm case and short lugs suit small wrists well.

6-7 in

Ideal; this is the wrist the BB58 was sized for.

7-7.5 in

Wears compact but intentional; try before assuming too small.

Over 7.5 in

Reads vintage-small — the 41mm Black Bay is the alternative.

The Goat's verdict

Buy or skip?

5/5 — the best-wearing vintage-style diver on sale

The BB58 nailed the brief: genuine 1950s dive-watch proportions with a modern in-house movement, at a price where ownership costs stay sane. It gives up the Submariner's ceramic bezel and brand gravity, but gains wearability the 41mm divers can't match. If you have a sub-7-inch wrist and want one diver, start here.

Skip if…

  • You want a bezel that stays mint — the aluminum insert will age (many love that).
  • You need clasp micro-adjustment on the fly — Tudor still doesn't offer it here.
  • Resale outperformance matters — a Submariner is the financial answer.

Homage tier · $250-12,000

Available alternatives (Amazon-priced)

If the BB58 is close but not exact, these cover the vintage-diver brief in every direction:

Rolex Submariner (126610LN)

The original blueprint — our reference page has full details

Check Amazon price

Omega Seamaster 300 (heritage)

The true-vintage-tech alternative with a ceramic sandwich dial

Check Amazon price

Tudor Pelagos 39

The modern-tool sibling in titanium — see our review

Check Amazon price

Longines Legend Diver 39

Super-compressor style, in-house L888, ~$2,600

Check Amazon price

Seiko Prospex SPB147 / 62MAS line

Vintage-flavored Seiko diving under $1,000

Check Amazon price
Browse all homage alternatives →

Side by side

Black Bay 58 vs The Vintage-Diver Field

SpecBB58SubmarinerLegend Diver
Real price$3,100-3,800$11,000-13,000$2,100-2,600
MovementMT5402, 70h3235, 70hL888, 72h
Case size39mm41mm39mm
BezelAluminum (ages)Ceramic (stays mint)Internal, no insert
Resale behaviorStrong for TudorStrongestWeak-moderate

After the purchase

Ownership costs

Cost itemDetail
ServiceTudor suggests 5-7 year checks; service typically $400-600 via Rolex/Tudor service centers.
BraceletFaux rivets are cosmetic; the clasp is solid but lacks micro-adjust — the 2023+ 'T-fit' models fix this on other references.
Common issuesAluminum bezel scratches — expected and part of the aesthetic; date-free dial keeps setting simple.
Warranty5-year Tudor warranty from card date.

Quick answers

Frequently asked questions

Black Bay 58 vs Black Bay 41 — which should I buy?

Wrist size decides. Under 7 inches the 58's 39mm case is objectively better proportioned; over 7 the 41 fills better. The 58 also gets the gilt accents and aluminum bezel — the more vintage of the two.

Is the Black Bay 58 a good investment?

By Tudor standards, yes — it has held near retail for years. But no mass-market watch is an investment; buy it because the fit and style are right.

Does the BB58 bezel fade?

The anodized aluminum insert will scratch and can fade over years — deliberately echoing vintage Subs. If you want permanent mint, buy ceramic (Pelagos 39 or Submariner).

Can you wear a BB58 with a suit?

Yes — 39mm and 11.9mm thick slides under cuffs, and the gilt dial dresses up better than most divers.

Channels, ranked by risk

Where to buy safely

Tudor AD

~$3,800 retail; waits are short if any — a refreshing contrast to Rolex ADs.

Gray market

$3,100-3,600 unworn from established dealers; verify card date.

Pre-owned

2019-2021 full sets from ~$2,900; check bezel insert condition and crown tube wear.

Rolex, Submariner and reference numbers are trademarks of their respective owners, used here for identification only. The Watch Goat is not affiliated with or endorsed by any brand.

Nothing on this page is financial advice.

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The Watch Goat · Aug 30, 2026