Series : DATEJUST
Model Number : 278381RBR-0020
Movement : Automatic
Power Reserve : Caliber Rolex2236,55Hours
Case Diameter : 31mm
Case Thickness : 11mm
Factory : Clean Factory / VSF(VS Factory)
Mirror Material : Resistant Sapphire Crystal
Dial Colour : Deep Purple
Strap Colour : Silver & Gold
Strap Material : 18kt Rose Gold & Steel
Clasp : Folding Clasp
Crown Position — Construction Geometry
Crown Position on 278381RBR-0020 is treated strictly as crown position construction geometry. Repeated crown position shapes around the 31mm case are separated from color and gloss; crown position interfaces are recorded before cosmetic impressions. If crown position conflicts with the Deep Purple or 18kt Rose Gold & Steel configuration, that crown position conflict remains visible in the assessment.
Day Aperture — Construction Geometry
Day Aperture on 278381RBR-0020 is treated strictly as day aperture construction geometry. Repeated day aperture shapes around the 31mm case are separated from color and gloss; day aperture interfaces are recorded before cosmetic impressions. If day aperture conflicts with the Deep Purple or 18kt Rose Gold & Steel configuration, that day aperture conflict remains visible in the assessment.
Cyclops Position — Construction Geometry
Cyclops Position on 278381RBR-0020 is treated strictly as cyclops position construction geometry. Repeated cyclops position shapes around the 31mm case are separated from color and gloss; cyclops position interfaces are recorded before cosmetic impressions. If cyclops position conflicts with the Deep Purple or 18kt Rose Gold & Steel configuration, that cyclops position conflict remains visible in the assessment.
Coronet Geometry — Community Qc
Coronet Geometry for 278381RBR-0020 becomes a focused community-QC photography question. A coronet geometry photograph should expose coronet geometry without dramatic seller lighting; a coronet geometry concern commonly raised in Reddit or forum QC discussions supplies a question, not proof. The technical answer to coronet geometry still comes from the genuine 278381RBR-0020 reference.
Reference Configuration — Functional Check
Reference Configuration supplies a separate reference configuration functional test for 278381RBR-0020. The listed Automatic is checked through reference configuration behavior or reference configuration architecture; the movement name never substitutes for reference configuration evidence. After reference configuration testing, the reference configuration result is compared with the external Deep Purple and 18kt Rose Gold & Steel configuration of 278381RBR-0020.
Caseback Profile — Genuine Study
Caseback Profile evidence for 278381RBR-0020 uses caseback profile against a same-generation genuine Rolex. Within caseback profile, the Deep Purple and 31mm become reference anchors; within caseback profile, the 18kt Rose Gold & Steel remains a configuration cross-check. Only caseback profile observations from the matching 278381RBR-0020 generation receive direct comparison weight.






























John Wilson –
I had a pretty specific look in mind when I started shopping. Once I saw it in normal lighting, diamond markers and date display made more sense than it did on screen. The ordering process was straightforward and I didn’t have any trouble finding the information I needed. My first impression has been positive.