Pre-owned watches trade across a wide condition spectrum. These ranges are typical for the secondary market.
The 41mm Black Bay is the value entry point into Tudor sport watches and trades close to retail; strong brand support and wide availability keep the secondary market liquid.
Editorial estimate, 2026 Q2. Actual prices vary by condition, date, and box/papers status.
The Black Bay 41 is the Tudor most buyers end up with, and for good reason. Correct dive watch proportions, in-house movement, 200m water resistance, and a price that leaves room in the budget for a strap collection. If the Submariner is the benchmark, the BB41 is the honest answer.
Tudor relaunched the Black Bay in 2012 as a direct nod to its own dive watch heritage from the 1950s and 1960s, drawing on the broad crown-guards and domed crystal of those original references. The 41mm case arrived in 2017, settling the size debate that had followed the original 41mm launch and replacing the ETA movement with Tudor's own MT5602. The MT5602 shares its base architecture with Rolex's caliber 3135 and carries a 70-hour power reserve, which is serious engineering for the price point.
Snowflake and dagger hand variants have coexisted across the lineup, giving buyers a meaningful choice without fragmenting the core reference. The M79230N is the steel case on leather or fabric strap, the purist configuration before you get into bracelet or bronze territory.
The BB41 market is liquid enough that pre-owned prices cluster tightly, so paying full retail is rarely necessary. Watch the dial condition carefully on older examples: the applied Tudor rose logo can show wear at the base where it meets the dial, which is cosmetic but worth negotiating on. Bracelets on earlier production runs had noticeable play at the clasp; if the watch comes on a bracelet, check that before buying.
Some buyers find the domed crystal scratches more readily than a flat sapphire, so ask about the crystal condition specifically. Tudor's warranty transfers with proof of purchase, but the secondary market frequently moves watches without paperwork, so price accordingly if box and papers are absent.
Pre-owned M79230N examples in good condition trade in the $2,800 to $3,500 range depending on configuration and completeness. Full set with box and papers commands a modest premium. The spread between the BB41 and a comparable pre-owned Submariner is roughly $4,000 to $6,000, which is the core of the value argument for Tudor buyers.
The MT5602 is a COSC-certified in-house caliber with a 70-hour power reserve and Tudor recommends service intervals of approximately ten years under normal wear. Tudor's authorized service network services the MT5602 directly, and pricing is substantially below what Rolex charges for a comparable movement service. Keep records of any service performed, as documentation adds to resale value on a watch that trades frequently in the pre-owned market.
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The GMT hand must advance in one-hour increments independently; a GMT hand linked to the main hour hand means the GMT complication has failed.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| dial | GMT hand independent advancement | Red GMT arrow hand advances one hour at a time via crown; main hour hand unaffected | GMT hand that moves simultaneously with the main hour hand indicating GMT complication failure |
| caseback | Cal. MT5602 in-house movement | Tudor Cal. MT5602 visible and signed through caseback; METAS-certified movement | Non-Tudor movement visible indicating a movement swap |
| case | Bezel external GMT function | External bezel rotates to track a second timezone; 24-hour graduated scale is correct for GMT use |
The Black Bay 41 is the standard steel dive watch in the Black Bay line. At 41mm and 14.8mm thick it is noticeably larger and thicker than the BB58. The MT5602 inside is the same caliber as the Black Bay GMT. Authentication is straightforward for this reference: snowflake hand proportions and the MT5602 movement verification are the primary checks.
Down 9% over the past 90 days
Based on eBay sales, last 12 months
| 12-hour graduated bezel scale instead of 24-hour indicating a wrong-specification bezel swap |
| Black dial with snowflake hands and applied dot indices. The BB41 has a date window at 3 o'clock, unlike the no-date BB58. |
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| 2017 to present (blue) | Blue dial variant. Same case, movement, and bezel system as the black dial. |
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