C Factory Ref. 126519 in Cement Gray

Other components—including applied hour markers and lume—are exceptionally well executed. Note: As previously mentioned, genuine Rolex watches with calibre 4131 feature cylindrical (rather than conical) pointer tube tips on the hands. However, among the four authentic reference pieces supplied by Clean, we observed inconsistencies—such as variations in the roundness of the applied markers and the continued use of older-style conical hand tube tips—suggesting Rolex may be clearing remaining stocks of calibre 4130 movements.

Case and bracelet comparisons (shown in accompanying images) reveal only minimal aesthetic differences from genuine models.

Despite extremely tight turnaround time, Clean promptly acquired five authentic examples. It is reported that the market value depreciation of these watches has already exceeded USD 100,000—excluding dismantled units and damaged components.

Having carefully examined both authentic and replica specimens side-by-side—and corroborated observations through comparative macro photography—I consider this replica a truly outstanding achievement.

The selection of SH4131 movement involves intricate technical and supply-chain considerations. We urge understanding that ‘SH’ does not equate to compromised quality; nor does Clean ever sacrifice component standards for higher profit margins. Clean confirmed that the procurement cost for this SH4131 movement is comparable to that of the DD4130.

Slight color or tone variations in the photos may result from lighting conditions. Natural-light macro shots are included for accurate visual reference—please rely on these for true representation.