Series : LADY DATEJUST
Model Number : 178273BK
Movement : Automatic
Power Reserve : Caliber Rolex 2235, 48Hours
Case Diameter : 31mm
Case Thickness : 11.4mm
Factory : Clean Factory / VSF(VS Factory)
Crystal : Resistant Sapphire Crystal
Dial Colour : Black
Strap Colour : Silver
Strap Material : 18kt Gold & Steel
Clasp : Folding Clasp
Evidence Question — Caseback Transition
For 178273BK, caseback transition should be compared from a square-on macro. Structural form survives lighting changes better than surface shine, making it a stronger reference-specific clue.
What to Verify: Case-Bracelet Interface
On 178273BK, case-bracelet interface deserves close side views rather than a wrist-only photograph. The strongest evidence comes from the case, end links and clasp telling the same construction story.
Research Focus: White-Balance Control
For 178273BK, 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.
Replica Photo Pitfalls
For 178273BK, replica photo pitfalls should be framed as a research problem rather than a verdict. Replica, clone and fake are useful comparison terms, but the technical conclusion still has to come from same-reference construction, mechanics and component relationships.
What to Verify: Hand Reach
On 178273BK, hand reach is best read as part of the whole dial composition. A true side profile can show spacing and repeated geometry without perspective distortion; the Black finish should be secondary to relationships that remain stable across lighting conditions.


















Eric Jahnsan –
What interested me here was the balance between the case size and the dial design. I’ve only had a short time to evaluate it, so I’m keeping my comments focused on the listed design and initial impression. The listed power-reserve specification is another detail I paid attention to because I prefer knowing what the movement specification is. Overall, the configuration makes sense for what I wanted.