Tudor Serial Number Lookup

Between the lugs at 6 o'clock

The primary location for Tudor serial numbers is between the lugs at the 6 o'clock side of the case. To access it, you need to remove the bracelet or strap using a spring bar tool. The serial number is engraved vertically on the case edge, typically consisting of 5 to 7 digits on vintage models or an alphanumeric string on modern references. This is the most reliable location and is present on virtually all Tudor watches from every production era.

Caseback engravings (vintage models)

Some vintage Tudor models from the 1950s through the 1970s also feature serial or case reference numbers on the caseback. These are typically engraved into the stainless steel and may include both the model reference and the serial number. On screw-down casebacks, the engravings appear on the outer surface. Not all vintage Tudor models have caseback serials, so the between-the-lugs location remains the definitive spot.

Model reference at 12 o'clock

Between the lugs at the 12 o'clock position, you will find the Tudor model reference number (not the serial number). This identifies the specific model, such as 79230N for the Black Bay or 25600TN for the Pelagos. The reference number at 12 and serial number at 6 should be cross-referenced to ensure they are consistent with each other and with the watch's physical characteristics.

Warranty card and papers

Modern Tudor watches are sold with a warranty card that includes the serial number and model reference. Always cross-reference the serial printed on the card with the serial engraved on the watch itself. A mismatch between the card and the case engraving is a serious red flag indicating that the papers may have been swapped or that the watch is counterfeit.

Vintage era: sequential numeric serials

Tudor historically used Rolex-style sequential serial numbers, with Tudor serial ranges running parallel to but separate from Rolex production. Vintage Tudor serials from the 1950s through the 1980s are purely numeric and typically 5 to 6 digits long. These can be approximately dated using serial range charts:

• 1950s: Serials in the low thousands to approximately 300,000
• 1960s: Approximately 300,000 to 600,000
• 1970s: Approximately 700,000 to 900,000
• 1980s: Serial numbers crossing into the millions, with some models reaching 7-digit ranges

These ranges are approximate because Tudor did not publish official serial-to-date tables. Production volume varied year to year, and not all serial blocks were used linearly.

Transition era: letter prefixes (1990s-2000s)

During the 1990s and 2000s, Tudor transitioned to serials with letter prefixes similar to Rolex's system. These typically feature a single capital letter followed by 6 digits (for example, H123456). The letter prefix roughly corresponds to a production year or narrow year range. Tudor used a subset of the same letter sequence as Rolex but with different serial number ranges, making direct Rolex chart comparisons inaccurate for Tudor.

Modern era: alphanumeric serials

Modern Tudor watches produced from approximately 2010 onwards use randomized alphanumeric serial numbers. These contain a mix of letters and numbers with no discernible sequential pattern. Like Rolex's post-2010 random serials, modern Tudor serials cannot be decoded to determine production date from the serial alone. You must contact an authorized Tudor dealer or service center for production date verification.

Check engraving quality

Authentic Tudor serial engravings are cleanly machined into the case metal with consistent depth, uniform character spacing, and sharp edges. The characters should be perfectly vertical and evenly aligned. Run your fingernail across the engraving—on a genuine Tudor, you should feel a distinct groove with crisp edges. Counterfeits often use acid-etching or laser marking that produces a shallow, fuzzy appearance without proper depth.

Cross-reference model and serial

Verify that the model reference number at 12 o'clock corresponds to the watch's physical characteristics (dial, bezel, case material). Then check that the serial number at 6 o'clock falls within a plausible production range for that model. For example, a Tudor Black Bay 79230N serial should correspond to post-2012 production since that is when the modern Black Bay line launched.

Contact an authorized Tudor dealer

The most reliable verification method is contacting an authorized Tudor dealer or Tudor service center. Provide them with the serial number and reference number, and they can check Tudor's internal records to confirm authenticity, production date, and original specifications. This service is typically free and takes 1 to 5 business days. Some dealers can also verify on the spot if you bring the watch in person.

Compare warranty card to watch

If the watch comes with a warranty card, the serial number printed on the card must match the serial engraved on the case exactly. Check every digit and letter carefully. Also verify that the model reference on the card matches the reference between the lugs at 12 o'clock and that the authorized dealer stamped on the card is a real Tudor dealer.

Because Tudor was created by Rolex and historically shared case suppliers, there is significant overlap in how the two brands handle serial numbers. However, there are important differences:

• Separate serial ranges: Tudor and Rolex use independent serial number sequences. A Tudor serial cannot be looked up on a Rolex chart and vice versa.
• No rehaut engraving on Tudor: Unlike Rolex (which added rehaut engravings in 2005), Tudor has never used rehaut serial engravings. Tudor serials are only found between the lugs.
• Caseback differences: Some vintage Tudor models have caseback engravings that Rolex equivalents do not, and vice versa.
• Modern divergence: Since Tudor became fully independent with in-house movements starting in 2015, their serial numbering has further diverged from any Rolex parallels.

Can I find my Tudor's serial without removing the bracelet?

Generally no. Tudor does not engrave serial numbers on the rehaut like Rolex does on post-2005 models. The only way to see the serial on most Tudor watches is to remove the bracelet or strap and look between the lugs at 6 o'clock. If you are not comfortable doing this yourself, any watchmaker can safely remove and reattach the bracelet in minutes.

Does Tudor keep a database of serials?

Tudor maintains internal production records, but these are not publicly accessible. There is no online tool or website where you can enter a Tudor serial number and get results. The only way to access Tudor's records is through an authorized dealer or official Tudor service center.

My vintage Tudor serial is worn and hard to read. What should I do?

On very old Tudor watches, the serial engraving can become faint due to decades of wear, polishing, or corrosion. Try viewing the area under strong directional lighting at a shallow angle, or use a jeweler's loupe at 10x magnification. A watchmaker can often read faint serials using specialized lighting equipment. Never attempt to re-engrave or deepen a faded serial, as this destroys originality and can reduce the watch's value.