Pre-owned watches trade across a wide condition spectrum. These ranges are typical for the secondary market.
Full condition grading guide →
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.
Community + OSINT signals haven’t landed for this reference yet. We don’t publish a rating against zero signal: the number would mean nothing. Editorial body + caliber + market value still surface above; ratings appear once the signal corpus does.
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 | 12-hour graduated bezel scale instead of 24-hour indicating a wrong-specification bezel swap |
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.