Last updated: August 2026

QC is one of the most misunderstood parts of buying a rep watch.

Some buyers approve a watch after looking at one photo. Others zoom in until a speck of dust looks like a manufacturing disaster.

Neither approach is useful.

QC is not about finding a perfect watch. It is about confirming that:

1. You received the correct model and configuration.
2. The specific unit does not have a meaningful manufacturing or assembly defect.
3. The basic functions and timing appear reasonable before shipping.

This guide explains what deserves your attention, what usually does not and when to GL, request clarification or RL.

1. What QC can tell you

A complete QC package can help you inspect:

• Correct model and reference
• Factory and version
• Dial and bezel configuration
• Bracelet or strap
• Visible alignment
• Dial printing
• Date-wheel position
• Bezel and pip
• Hands
• SELs
• Case and bracelet damage
• Basic functions
• Short-term timegrapher performance

QC allows you to evaluate the specific unit shown in the photos and videos.

2. What QC cannot tell you

QC cannot prove:

• Long-term movement reliability
• Internal cleanliness
• Correct lubrication
• Full power reserve
• Accuracy in every position
• Resistance to shipping damage
• Water resistance
• Future parts availability
• The identity of every internal component
• Genuine-level quality

A good timegrapher video does not guarantee that the movement will run perfectly for years.

A dive-watch case does not prove that the delivered watch is safe for swimming.

A factory sticker does not conclusively authenticate the factory or movement.

Treat QC as a limited pre-shipment inspection—not a warranty.

3. Factory flaw or unit defect?

Before deciding whether to RL, determine whether the issue is a factory-level flaw or a unit-level defect.

Factory-level flaw

A factory-level flaw appears on most watches from the same factory, version or batch.

Examples may include:

• Slightly inaccurate dial color
• Known font difference
• Crystal tint
• Case dimension difference
• Incorrect hand stack
• Movement architecture
• Consistent crown shape
• Recurring date-wheel position
• Bezel color that differs from genuine

Rejecting one watch normally will not solve a factory-level flaw. The replacement will probably have the same characteristic.

Factory flaws should be researched before choosing the watch.

Unit-level defect

A unit-level defect affects the specific watch shown in QC.

Examples include:

• Badly rotated marker
• Missing lume
• Cropped date
• Damaged bezel
• Deep scratch or dent
• Misaligned hand
• Broken clasp
• Faulty crown
• Chronograph that fails to reset
• Clearly abnormal movement behavior

Unit defects are what QC is designed to identify.

Remember:

4. What a complete QC package should include

Do not judge a watch from one attractive front photograph.

A useful QC package should contain:

• Complete, uncropped photo album
• Clear straight-on dial photo
• Several angled dial and crystal photos
• Left and right case profiles
• Crown and crown-guard photos
• Caseback photos
• Bracelet and clasp photos
• All four end-link corners
• Several date values
• Hands positioned away from important text
• Hand-alignment photo near 12:00
• Lume photo when relevant
• Timegrapher video
• Function video for complications

For a GMT, chronograph or calendar watch, the function video may need to show:

• Crown positions
• Manual winding
• Time setting
• Date setting
• GMT-hand adjustment
• Chronograph start, stop and reset
• Calendar operation

If an important function has not been demonstrated, ask for a short video before deciding.

What to check

5. Confirm the watch’s identity first

Before examining tiny alignment details, confirm:

• Correct brand and model
• Correct reference
• Correct size
• Correct dial
• Correct bezel
• Correct bracelet or strap
• Correct factory
• Correct version
• Correct movement option, where reasonably verifiable

Also check any agreed additional parts or accessories.

A beautiful watch is still an RL if it is not the configuration you selected.

6. Look for visible damage

Inspect the:

• Crystal
• Bezel
• Case
• Crown
• Caseback
• Bracelet
• Screws
• Clasp

Look for:

• Cracks
• Chips
• Deep scratches
• Dents
• Missing screws
• Damaged links
• Broken clasp components
• Visible debris beneath the crystal

Protective film, fingerprints, dust and reflections frequently resemble scratches.

If a mark changes position or disappears between photographs, it is probably not permanent damage. Ask for the area to be wiped and photographed again before rejecting the watch.

7. Establish a trustworthy viewing angle

Perspective creates many false QC problems.

A marker can look crooked because the watch is tilted. A date can look off-center because the camera is positioned to one side. A bezel can look misaligned because the lens is not centered over the dial.

Before judging alignment, check whether:

• The camera is centered over the dial
• The dial appears circular
• The case is level
• The crown is not leaning toward the camera
• The watch is not tilted forward or backward
• Both sides of the case appear symmetrical

Never apply an alignment overlay to an obviously tilted photograph.

If the front image is unsuitable, request one properly centered photograph. Do not RL a watch because of bad photography.

8. Check the hour markers and logo

Inspect whether:

• Markers point toward the correct minute marks
• Applied markers are rotated
• Double markers are parallel
• The logo is level
• The dial appears centered in the case
• Several small errors combine into a visible imbalance

Describe concerns precisely.

Useful:

Not useful:

A tiny deviation visible only with an overlay and extreme magnification is usually less important than a defect visible immediately at normal watch size.

9. Check the dial printing

Look for unit-level defects such as:

• Missing ink
• Smudging
• Bleeding
• Crooked text
• Uneven spacing
• Printing rotated with the dial
• Debris beneath the crystal

Do not confuse an established factory font or spacing difference with a defect affecting only this unit.

If every current example has the same printing, another unit probably will not solve the problem.

10. Check the date wheel and cyclops

One displayed date is not enough to evaluate an entire date wheel.

Ideally, inspect a selection of:

• Single-digit dates
• Teen dates
• Dates in the twenties
• A date with two wide digits

Check for:

• Horizontal centering
• Vertical centering
• Cropped numerals
• Uneven height between digits
• Clear printing
• Consistent date change
• Cyclops position
• Cyclops rotation

A date that sits slightly high or low but remains clearly visible may be acceptable.

A date repeatedly touching or disappearing behind the window is more serious.

Always judge date alignment from the straightest available photograph.

11. Check the bezel and pip

For watches with a bezel, inspect:

• Alignment at 12
• Pip centering
• Insert seating
• Engraving or printing fill
• Chips and scratches
• Color transitions on two-color inserts
• Consistency around the case

Remember that a rotating bezel has mechanical play. A still image may catch it slightly between positions.

If bezel action is important, request a short video demonstrating its movement and return to 12.

Do not RL solely because a rotating bezel is one fraction of a click away from perfect alignment in one photograph.

12. Check the hands

Inspect:

• Hand alignment near 12:00
• Whether the hands are straight
• Whether they clear one another
• Whether they clear applied markers
• Whether the seconds hand runs normally
• Whether the date changes
• Whether chronograph hands reset to zero
• Whether GMT or calendar hands adjust correctly

For a chronograph, the start, stop and reset sequence should be demonstrated.

A photograph only proves where the hands were during that moment. Functional concerns require video.

13. Check SELs, bracelet and clasp

For watches with solid end links, inspect all four corners:

• Upper left
• Upper right
• Lower left
• Lower right

A dark line is not automatically a gap.

A meaningful gap is more likely to show background light through the junction between the end link and case.

Also inspect:

• Bracelet screws
• Damaged links
• Uneven finishing
• Clasp fit
• Clasp closure
• Correct bracelet type
• Sharp or deformed components

Not every watch uses Rolex-style SEL construction. Mark this section N/A when it does not apply.

14. Check the rehaut carefully—but realistically

On models with an engraved rehaut, inspect:

• General centering
• Whether the engraving appears level
• Whether the serial area is in the expected position
• Obvious damage or missing engraving

Perfect letter-by-letter alignment is not always realistic, including across genuine production.

A rehaut that appears slightly misaligned under magnification may be invisible on the wrist.

Judge the overall appearance, not every individual letter.

15. Check lume only when it matters

A lume photograph may reveal:

• Missing lume
• Major unevenness
• Incorrectly filled markers
• Dead sections
• Obvious color differences

A lume photo does not reliably compare brightness unless exposure, charging time and camera settings are controlled.

Do not judge lume longevity from one bright photograph taken immediately after charging.

16. Check complications

For watches with additional functions, confirm the relevant operations.

GMT

Check:

• Which hand adjusts independently
• Correct hand order
• Date behavior
• Smooth hour-hand jumps
• Whether the hands remain aligned

Chronograph

Check:

• Start
• Stop
• Reset
• Subdial operation
• Reset alignment
• Whether hands stick or jump

Day-date or calendar

Check:

• Day change
• Date change
• Alignment in each window
• Correct crown positions
• Adjustment functions

Moonphase

Check that the disc moves when adjusted. Do not assume that every rep moonphase reproduces the genuine complication’s exact cycle.

Never force a function if resistance is felt.

17. Read the timegrapher correctly

A timegrapher is a useful screening tool, but its numbers require context.

Rate

Rate estimates how many seconds the watch may gain or lose per day during the test.

A broad beginner screening point is approximately ±20 seconds per day, but this is not a universal GL/RL rule.

The result is normally measured:

• In one position
• For a short period
• At one winding level
• Before shipping

It does not predict exact performance on the wrist.

Amplitude

Amplitude estimates how far the balance wheel swings.

For many modern movements, approximately 230–310 degrees in a dial-up test can serve as a broad screening area.

However, the correct expectation depends on:

• Exact movement
• Winding level
• Test position
• Lift-angle setting
• Movement condition

Some movements normally produce lower readings.

A questionable amplitude should usually trigger a properly wound retest—not an immediate RL.

Beat error

Beat error measures the timing difference between the tick and tock.

For many modern movements, below approximately 1.0 ms is a broad beginner screening point, with lower generally being better.

Interpret it together with the trace and movement type.

Lift angle

Lift angle is a machine setting, not a measurement of movement health.

Using the wrong lift angle changes the displayed amplitude.

Do not compare amplitude readings unless you know:

• Movement
• Lift angle
• Test position
• Winding state

Trace

Prefer a video long enough to confirm:

• The signal is active
• Values stabilize
• The trace remains reasonably straight
• Numbers do not jump wildly
• The tested watch is producing the reading

A still photograph captures only one instant.

What to ignore

18. Tiny flaws visible only under extreme magnification

A watch is normally viewed from approximately arm’s length—not at ten or twenty times magnification.

Before rejecting a watch:

1. View the original image.
2. Reduce it until the watch appears close to real wrist size.
3. Look away and return to the image.
4. Ask whether the issue is still immediately visible.

If the problem disappears at realistic size, consider whether it will actually affect ownership.

Large photographs are useful for identifying damage, but they can destroy your sense of scale.

19. Alignment overlays on tilted photographs

An overlay is only as accurate as the source image.

If the camera is off-center, the watch is tilted or the photograph has lens distortion, the overlay will create apparent errors that do not exist.

Use an alignment tool only after:

• Selecting the straightest image
• Correcting obvious rotation
• Confirming that the dial appears circular
• Centering the tool properly

The overlay should support visual inspection—not replace it.

20. Dust, fingerprints and protective film

Common false alarms include:

• Dust on the crystal
• Fingerprints
• Hair or fibers outside the watch
• Wrinkles in protective film
• Bubbles under stickers
• Reflections from lights
• Adhesive residue

Compare several angles.

A real scratch normally remains attached to the same part of the watch. Dust and reflections usually move or disappear.

Ask for a cleaned photograph before reaching a conclusion.

21. Minor SEL shadows

Lighting creates dark seams around end links.

Do not call every dark line a gap.

Look for:

• Visible background light
• Clearly uneven physical spacing
• One corner substantially worse than the others
• End link sitting unusually high or low
• Obvious movement or poor fit

Small dark seams without visible space are usually not meaningful.

22. Known factory characteristics

Do not repeatedly RL watches for a feature shared by the entire version.

Examples may include:

• Slight dial-color difference
• Factory-specific font
• Known crystal tint
• Known case thickness
• Consistent rehaut position
• Movement decoration
• Known hand-stack difference

If the characteristic is unacceptable, change the factory or version before ordering.

Cycling through multiple units will not redesign the watch.

23. One imperfect date

Date wheels can vary slightly across their full rotation.

One date sitting a little higher or lower does not automatically mean the entire date wheel is defective.

Ask to see several dates.

A consistent, severe problem is more meaningful than one slightly imperfect number.

24. One timegrapher number in isolation

Do not automatically RL because:

• Rate is not close to zero
• Amplitude seems slightly low
• Beat error is not exactly 0.0
• The machine uses a default lift angle

Identify the movement and test conditions first.

If a result is questionable, request a properly wound retest with the lift angle, position and video visible.

The combination of values and trace matters more than one impressive or disappointing number.

25. Perfection compared with genuine

QC is not a fresh genuine-versus-rep comparison.

If the factory’s dial, case, crystal or movement differs from genuine, that should have been considered before selecting the watch.

During QC, compare the unit primarily with:

• The agreed configuration
• Other current examples from the same factory and version
• Known factory characteristics
• Reasonable manufacturing expectations

Do not expect an RL to turn one factory’s product into another factory’s version or into a genuine watch.

Making the decision

26. GL when

A GL is reasonable when:

• Configuration is correct
• No meaningful damage is present
• Alignment looks acceptable at realistic size
• Date remains readable
• Required functions operate
• Timegrapher results are plausible
• Remaining imperfections are known factory traits

GL does not mean the watch is perfect.

It means the specific unit is acceptable within realistic expectations.

27. Ask for clarification when

Request another photo or video when:

• A mark may be dust or reflection
• Protective film hides the surface
• The dial photo is tilted
• Hands cover an important area
• Only one date is shown
• The bezel differs between angles
• SELs are hidden
• Timegrapher values have not stabilized
• Lift angle or winding state is unknown
• A complication has not been demonstrated

Do not RL a question that one additional image can answer.

28. RL when

An RL may be reasonable for:

• Wrong model or configuration
• Major visible damage
• Badly rotated marker
• Several obvious alignment problems
• Unreadable or heavily cropped date
• Severely displaced bezel insert or pip
• Missing lume or dial component
• Hands colliding or sticking
• Chronograph failing to reset
• Crown or clasp failure
• Watch not running
• Clearly abnormal timing after a valid retest

Use this final test:

If the answer is no, it may not justify an RL.

Remember that a replacement is not guaranteed to be better.

29. Copy-and-paste QC template

Factory:
Model and reference:
Size:
Movement:
QC album:
Function video:

1. Correct configuration:
2. Index and logo alignment:
3. Dial printing:
4. Date wheel:
5. Hand alignment:
6. Bezel and pip:
7. SELs:
8. Bracelet and clasp:
9. Timegrapher:
10. Visible damage:
11. Known factory flaws:
12. My specific concerns:

A useful concern:

A less useful request:

Show what you checked before asking others to help.

30. Final QC checklist

Before giving a GL, confirm:

• Correct model and reference
• Correct factory and version
• Correct dial, bezel and bracelet
• No significant visible damage
• Markers acceptable at normal size
• Printing clean
• Several dates inspected
• Bezel and pip acceptable
• Hands and complications functioning
• SELs and clasp acceptable
• Timegrapher results understood in context
• Any uncertainty clarified
• Factory flaws separated from unit defects

The goal of QC is not to discover the world’s first flawless rep.

The goal is to make a calm, evidence-based decision about the specific watch being offered.

Inspect what matters. Clarify what is uncertain. Ignore problems created by magnification, perspective and unrealistic expectations.