Watch condition grading
Condition is the second-largest single driver of value, after the reference itself. Sellers use the grades inconsistently; Grail Atlas's engine has a fixed scale and a fixed factor table. This guide is the rosetta stone between the two.
The Grail Atlas scale (best to worst)
Unworn / NOS (New Old Stock)
Never owned, never serviced, complete original-spec accessories. Plastic stickers may still be on the case-back and bracelet links. For modern production, this is “new”; for vintage, this is unicorn material. A vintage NOS watch can carry a premium of 20-35% over excellent. The factor table reflects that asymmetry.
- Dial: no aging, no dust inclusions, all printing crisp and without foxing.
- Case: factory brushing and polishing intact, no contact marks on lugs or flanks, protective film intact if applicable.
- Crystal: zero marks, no internal condensation, original press-fit or screwed-in with no installation scratches.
- Bracelet / strap: no stretch, no clasp wear, original link count, no pin marks from sizing.
- Movement (if visible): original factory lubricants, no service marks, serial date matches papers date.
Mint / Near Mint
Worn rarely if at all. Indistinguishable from unworn to the naked eye; differences appear only under a 10x loupe. Original case finish fully intact. Dial and hands pristine with no aging.
- Dial: no aging, no dust, all printing sharp under magnification.
- Case: factory finish preserved on all surfaces; at most one or two micro-transfer marks invisible without magnification.
- Crystal: no scratches visible to the naked eye; at most one hairline under loupe.
- Bracelet / strap: no perceptible stretch; clasp shows at most faint contact trace.
- Movement (if visible): pristine, no service evidence, running within spec.
Excellent
Honest light use. Light hairline scratches on the bracelet, possible micro-marks on the case from normal wear, dial and hands crisp and original. The market's baseline grade. Most full-set examples that have been worn at all sit here.
- Dial: original with no refinishing; lume consistent across all plots; printing legible and sharp to the naked eye.
- Case: factory brushing present on flat surfaces; hairline scratches on flanks and lugs only; chamfers intact.
- Crystal: no scratches visible without magnification; at most a faint hairline or two under 10x.
- Bracelet / strap: minimal stretch (compression test shows <1 mm of play); clasp interior may show light wear marks.
- Movement (if visible): no sign of amateur service; rotor smooth and quiet; may have one documented professional service.
Very Good
Honest use; some scratches that buff out, no deep marks, no cosmetic compromises that change wearability. About 7-15% below the excellent / full-set baseline depending on tier and era.
- Dial: original; lume may show light fading consistent with age; no refinishing evidence.
- Case: visible scratches on flanks under natural light; chamfers still defined; no polishing distortion.
- Crystal: one or two fine scratches visible without loupe; no chips or crazing.
- Bracelet / strap: moderate stretch (1-2 mm play acceptable); clasp wear marks visible but functional.
- Movement (if visible): serviced at some point; no movement parts replaced with non-original; runs within +/- 15 seconds per day.
Good
Visible wear that doesn't affect function. Deeper case scratches, possible polished-but-not-mangled chamfers, dial may show light tropical patina (which collectors price separately). About 15-30% below baseline depending on tier and era.
- Dial: aging or patina present; possible light tropical fade; original if disclosed; no reprint evidence.
- Case: deeper scratches on all surfaces; chamfers may be softened from one light polish; no metal removal distorting the profile.
- Crystal: visible scratches without loupe; possible small chip on the periphery that does not affect legibility.
- Bracelet / strap: noticeable stretch; bracelet stretch acceptable up to 3-4 mm play; pins may have been replaced.
- Movement (if visible): service history unknown or distant; runs but accuracy may have drifted; no missing parts.
Fair / Poor
Significant wear: deep scratches, possibly a service-replaced non-original component (dial, hands, or bezel insert), case clearly polished from original profile. Functional watch, not a showpiece. About 30-45% below baseline.
- Dial: heavy aging, possible damage (crack, lifting lacquer), or confirmed service replacement; disclosed non-original dial changes value and collector appeal significantly.
- Case: case profile altered by repeated polishing; chamfers fully rounded; metal loss visible at lug tips or crown tube.
- Crystal: multiple visible scratches; possible crack; sapphire replacement on a Hesalite-era watch is a flag for the condition category.
- Bracelet / strap: significant stretch or missing links; clasp may not function correctly; strap original condition unknown or missing.
- Movement (if visible): known issue or repair history; non-original parts possible; keep-time accuracy below minimum spec.
For Parts
Movement issue, case damage, or significant authenticity compromise. Watches at this grade are inventory for watchmakers and parts dealers, not buyers shopping for a wearable piece.
How seller language maps to the scale
Common seller phrases and what they typically mean in the Grail Atlas scale:
- “Mint”: usually excellent. A truly mint (= unworn) example will be described as such with provenance.
- “Like new”: usually excellent or unworn; the language is too aspirational on the seller side to be the Grail Atlas “unworn” baseline. Always ask for the original receipt date.
- “Honest wear”: usually very-good or good. The phrase is honest about the wear; ask for close-up photos.
- “Beater”: usually good or fair. The phrase is a vintage-collector signal that the watch has been worn hard and is priced accordingly.
- “Project”: fair or for-parts. The seller is telling you it needs work.
The seller-calibration adjustment
Grail Atlas's condition-calibration engine reads each seller's history (when available) to detect conservative or generous description biases. A seller whose stated “good” consistently presents as buyer-graded “very-good” gets a +1 calibration on their listings; the “value if likely” line on the listing reflects that.
The calibration is a factual observation about a seller's past sales, never an accusation. Sellers who describe accurately are surfaced as such; sellers who describe generously are flagged for closer inspection. Both are normal market behavior.
What to ask
- Photos of the bezel, lugs, and case-back under direct light: most wear lives there.
- Has the case been polished? Yes / no / once / multiple times. Repeat polishing is the worst case for vintage.
- Is the dial original? Service-replacement dials are honest if disclosed.
- When was it last serviced?
- What's the worst flaw you noticed when you handled it? This is the question whose answer tells you the most about the seller's integrity, not the watch.
Looking for a watchmaker? Read: How to find a watchmaker you can trust →