Series : OYSTER PERPETUAL
Model Number : 177200BK369BL
Movement : Automatic
Power Reserve : Caliber Rolex 2231,48Hours
Case Diameter : 31mm
Factory : Clean Factory / VSF(VS Factory)
Mirror Material : Resistant Sapphire Crystal
Dial Colour : Black
Strap Colour : Silver
Strap Material : Stainless Steel
Clasp : Folding Clasp
Generation Consistency
The first evidence set worth building concerns whether dial, case, bracelet and movement claim belong to the same reference generation. Study generation-specific architecture before borrowing assumptions from a visually similar predecessor or successor. This step is particularly important when neighboring models share broad styling. The source names Clean Factory / VSF(VS Factory) as factory attribution; keep that as classification metadata only.
Polish and Brushing
A useful examination starts by isolating transitions between surface treatments instead of overall brightness. Measure visually where brushing stops, polishing begins and edges change direction around lugs, bezel and bracelet. Normal wear must be separated from manufacturing traits before finish quality is used diagnostically. The source names Clean Factory / VSF(VS Factory) as factory attribution; keep that as classification metadata only.
Photographic Limitations
The inspection should be anchored initially to the quality of the image set itself. Test a straight dial view, a side profile and one close-up targeted to the feature under review; lens distortion, white balance and sharpening can otherwise create false clues. For 177200BK369BL, a close bracelet-to-lug image should be part of the minimum evidence package. The source names Clean Factory / VSF(VS Factory) as factory attribution; keep that as classification metadata only.
Closing Interpretation
If those observations agree, the reference claim becomes more credible; if they conflict, leave the result open. For this row, the comparison standard is 177200BK369BL itself rather than a neighboring configuration.
















Jason Martin –
I was curious whether the listing photos would match the actual proportions. In person, black dial and automatic movement is the detail that stands out most to me. I’m pleased with how it turned out.