Watch condition grading
Condition is the second-largest single driver of value, after the reference itself. Sellers use the grades inconsistently; GrailWatch's engine has a fixed scale and a fixed factor table. This guide is the rosetta stone between the two.
The GrailWatch scale (best to worst)
Unworn / NOS
Never owned, never serviced, complete original-spec accessories. Plastic stickers may still be on the case-back. 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.
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.
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.
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.
Fair
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.
For parts
Movement issue, case damage, or significant authenticity compromise. Watches at this grade are inventory for watchmakers and parts dealers, not buyers.
How seller language maps to the scale
Common seller phrases and what they typically mean in the GrailWatch 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 GrailWatch “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
GrailWatch'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.