Series : LADY DATEJUST
Model Number : 178275
Movement : Automatic
Power Reserve : Cal. Rolex 2235,48hours
Case Diameter : 31mm
Case Thickness : 10.5mm
Factory : Clean Factory / VSF(VS Factory)
Crystal : Scratch-Resistant Sapphire Crystal
Dial Colour : Brown
Strap Colour : Gold
Strap Material : 18kt Rose Gold
Clasp : Folding Clasp
Technical Field Note — Bezel Numeral Geometry
The stated Automatic gives 178275 a mechanical route into bezel numeral geometry. Where the topic affects operation, record the actual sequence or architecture first and treat movement names or decorative markings as secondary evidence.
Technical Field Note — Same-Reference Comparison
In this technical field note, keep same-reference comparison separate from provenance. Seller claims, documents and Clean Factory / VSF(VS Factory) belong to different evidence channels and should not rescue a weak physical observation.
Provenance Boundary Study
The stated Automatic gives 178275 a mechanical route into provenance boundary. Where the topic affects operation, record the actual sequence or architecture first and treat movement names or decorative markings as secondary evidence.
Technical Field Note — Marker Seating Depth
This technical field note makes marker seating depth the main question for 178275. Compare the feature with a verified same-generation example and use the Brown, 31mm and 18kt Rose Gold only where they materially affect the result.
Testing Day Aperture Typography
This technical field note makes day aperture typography the main question for 178275. Compare the feature with a verified same-generation example and use the Brown, 31mm and 18kt Rose Gold only where they materially affect the result.




















Josan Janes –
At 31mm, the proportions look fairly balanced, and the Brown works nicely with the 18kt Rose Gold. I kept coming back to this model when I compared the available options. I liked having the material and movement information spelled out rather than having to guess. The details are what make this version work for me.