Series : LADY DATEJUST
Model Number : 81339ZER
Movement : Automatic
Power Reserve : Caliber Rolex 2235, 48Hours
Case Diameter : 34mm
Factory : Clean Factory / VSF(VS Factory)
Crystal : Scratch-Resistant Sapphire Crystal
Dial Colour : Silver
Strap Colour : Silver
Strap Material : 18kt White Gold
Clasp : Folding Clasp
Testing Crystal Edge Profile
This condition interpretation makes crystal edge profile the main question for 81339ZER. Compare the feature with a verified same-generation example and use the Silver, 34mm and 18kt White Gold only where they materially affect the result.
Testing Calendar Transition Behavior
The 34mm format of 81339ZER provides proportion context for calendar transition behavior. Work from silhouette and relative geometry rather than attempting precise measurements from an unscaled photograph.
Condition Interpretation — Mechanical-Versus-Cosmetic Evidence
The stated Automatic gives 81339ZER a mechanical route into mechanical-versus-cosmetic evidence. Where the topic affects operation, record the actual sequence or architecture first and treat movement names or decorative markings as secondary evidence.
Testing Evidence Hierarchy
This condition interpretation makes evidence hierarchy the main question for 81339ZER. Compare the feature with a verified same-generation example and use the Silver, 34mm and 18kt White Gold only where they materially affect the result.
Condition Interpretation — Caseback Profile
The stated Automatic gives 81339ZER a mechanical route into caseback profile. Where the topic affects operation, record the actual sequence or architecture first and treat movement names or decorative markings as secondary evidence.


















Brion Green –
I paid more attention to the specifications than the marketing description when choosing this one. The case thickness of listed thickness is worth noting alongside the the listed case size; together they give a clearer idea of the proportions. For my purposes, this version makes a lot of sense.