Series : LADY DATEJUST
Model Number : 179171BKRN_O
Movement : Automatic
Power Reserve : Caliber Rolex2235, 48Hours
Case Diameter : 28mm
Case Thickness : 10.7mm
Factory : Clean Factory / VSF(VS Factory)
Crystal : Resistant Sapphire Crystal
Dial Colour : Black
Strap Colour : Silver & Gold
Strap Material : 18kt Rose Gold & Steel
Clasp : Folding Clasp
Research Focus: White-Balance Control
For 179171BKRN_O, white-balance control should be treated as part of the evidence process. The Black and surrounding metal may change with exposure and reflection, so stable geometry should outrank a single photographic impression.
Component-Age Consistency
For 179171BKRN_O, component-age consistency should be read across several components. A softened edge or newer-looking part may reflect service history rather than counterfeit manufacture, and the evidence should preserve that alternative explanation.
Research Focus: Cyclops Behavior
Cyclops Behavior gives 179171BKRN_O a useful cross-check because a short functional demonstration can answer questions that a single date-window photograph cannot.
Research Focus: Service-Part Possibility
For 179171BKRN_O, service-part possibility should be read across several components. A softened edge or newer-looking part may reflect service history rather than counterfeit manufacture, and the evidence should preserve that alternative explanation.
Single-Tell Risk
For 179171BKRN_O, single-tell risk helps counter confirmation bias. If the decisive view or function test is missing, the accurate result is an unresolved question rather than a forced conclusion.
Assessment Priority
For 179171BKRN_O, confidence should come from agreement between unrelated evidence channels. Configuration, construction, function and image quality should converge; unresolved conflicts should remain visible.


























onthany Toylar –
I was specifically looking for this sort of size and finish. At 28mm, the proportions look fairly balanced, and the Black works nicely with the 18kt Rose Gold & Steel. I checked the measurements before making the choice because size was important to me. The overall package is well balanced on paper and in the initial impression.