The QC Desk

How to read a QC photo set before you pay

By swissreptime · current as of June 2026

The verdict

Check in this order: dial and rehaut, then cyclops and date centring, then the solid end-link gaps, then lume tone, then the rotor and the timegrapher reading. Most problems live in the first two. If a seller cannot or will not send a full set including a movement and timegrapher shot, that refusal is itself the answer.

A QC set is not a formality to click through. It is the one moment you get to reject a piece before money moves, and it rewards looking in a fixed order instead of staring at the whole watch at once.

1. Dial and rehaut

Start at the dial because it is where the eye lands first in real life and where bad printing is least forgivable. Text should be sharp at the edges, not fuzzy; applied markers should sit level and not lean; the coronet or logo should be cleanly formed. Then move to the rehaut — the inner ring — and check the engraving is crisp and that, where the reference has it, the coronet at 6 o’clock lands in the right spot. A rehaut that is soft or misaligned is a fast disqualifier.

2. Cyclops and date

Two things in one glance. The date should be centred in its window, not riding high or kissing one edge, and the numeral font should match the reference. Then the cyclops: a correct one magnifies the date cleanly. A wrong or badly bonded lens gives a “black-hole” look — a dark, distorted ring instead of clean magnification — and that is one of the more reliable tells of a weaker build.

3. Solid end links and bracelet gaps

Look at the join where the bracelet’s solid end links meet the case. You want even, tight gaps on both sides. A flare that is wider on one side than the other, or a visible step, points to a looser tolerance build. This is also where you catch a case-and-bracelet mismatch that photos of the dial alone would never show you.

4. Lume tone

The lume should be the right colour for the reference and even across every marker and both hands. Patchy application, or a tone that is too green or too white for what the watch should have, is a small thing that signals a less careful factory. It is rarely a dealbreaker on its own, but it stacks with the rest.

5. Rotor and the timegrapher

Finally the movement. If the caseback comes off in the set, the rotor engraving should be clean and correct for the calibre. And ask for the timegrapher photo: it shows rate (how fast or slow, in seconds per day), amplitude, and beat error. You do not need to be a watchmaker to use it — a rate within a sensible band and a low beat error is what you want, and a seller who provides it is showing you they actually wound and checked the piece rather than pulling it off a shelf.

The honest caveat Photos have limits. A QC set tells you about printing, alignment, gaps and rate; it cannot tell you how the bracelet wears or how the movement holds over a month. Read the set properly to screen out the obvious failures, but understand it is a filter, not a guarantee. The other half of safety is who you are buying from.

One red flag worth its own line

Be wary of anything sold as having a “Swiss movement.” A genuine super clone runs a cloned version of the original calibre, not a Swiss one, and that phrase is usually either a misunderstanding or a sales line aimed at someone who does not know the difference. It tells you to slow down, not to speed up.

Current as of June 2026. The order of checks holds across models; specific tells vary by reference.

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