Series : OYSTER PERPETUAL
Model Number : 177200SV369BL
Movement : Automatic
Power Reserve : Caliber Rolex 2231,48Hours
Case Diameter : 31mm
Factory : Clean Factory / VSF(VS Factory)
Mirror Material : Resistant Sapphire Crystal
Dial Colour : Silver
Strap Colour : Silver
Strap Material : Stainless Steel
Clasp : Folding Clasp
Reference Mapping
The first objective is reference consistency. Size, dial treatment, bezel form, bracelet specification and movement claim should describe one coherent watch. The restrained Oyster Perpetual layout makes small asymmetries easier to see. Compare repeated markers and text baselines before moving to surface finish. The attributes specify Folding Clasp; include its hinge, engraving and closure geometry in the photographic record. The listed crystal is Resistant Sapphire Crystal, so its seating and edge profile can be compared as a separate construction detail. The stated movement is Automatic with Caliber Rolex 2231,48Hours power reserve; keep that statement separate from what is physically verified.
Profile and Bracelet Evidence
Inspect transitions rather than shine: where brushing stops, where polishing begins, how the lugs taper and how the end links meet the case. Soft or inconsistent boundaries deserve more attention than overall gloss.
Micro-Detail Review
Evaluate the dial as a measured layout: note distances between text blocks, markers and apertures, then compare symmetry around the central pinion. Unevenness that repeats across several points carries more weight than a single photographic anomaly.
Caliber Verification
Internal examination is valuable because exterior parts can be cosmetically convincing. The movement’s construction and operating sequence provide a separate evidence channel.
Evidence Summary
Finish with an evidence hierarchy rather than a yes/no shortcut: configuration accuracy, geometry, construction, mechanics and provenance should each receive their own weight. The attribute block names Clean Factory / VSF(VS Factory); retain it as specimen-classification metadata, not as authentication proof.














William Wright –
I wasn’t sure about it from the photos alone, so I paid extra attention to the details. The combination of automatic movement and sapphire-style crystal gives it a distinctive look without feeling too busy. The description was useful for comparing this version with the other choices. For what I was looking for, this does the job nicely.