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Description
APSF Richard Mille RM 055 Black Ceramic
A technically proficient execution of the RMUL2 architecture housed in precisely milled black ceramic.
Powered by Clone RMUL2 Caliber
The mechanical core of this APSF edition is a heavily modified manual winding movement engineered to replicate the RMUL2 skeletonized layout. By utilizing a custom baseplate, the factory achieves the necessary transparency that defines the RM 055 aesthetic. The gear train is suspended via PVD-coated bridges, mimicking the genuine titanium construction. Regulation is handled via a standard index system, providing stable chronometric performance across varying states of wind.
Rated at ±10–15 seconds per day. The manual-winding escapement is regulated prior to casing, ensuring stable amplitude when fully wound.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: Hours, minutes, and skeletonized architectural display
- ✅ Winding Direction: Unidirectional (Manual wind via crown)
Technical Specifications
The three-part tonneau case measures a precise 49.90X42.70MM, secured by functional spline screws. The matte black ceramic offers excellent scratch resistance and thermal stability.
Deeply recessed bridges hold the lumed hands, accented by precise dark green typography on the inner flange. The flange depth closely mirrors the genuine reference.
The upper bezel features a uniform micro-blasted finish. The recesses for the spline screws are sharply milled with no burrs or uneven edges.
Constructed from supple black rubber, the strap integrates seamlessly into the case lugs. Secured by a titanium spring-loaded deployment clasp.
Why APSF for This Reference?
Many collectors ask: “Why not BBR Factory?”
While BBR is highly regarded for its tourbillon models, APSF excels in the specific material execution of the RM 055. The APSF ceramic bezel exhibits a superior, more uniform micro-blasted texture that accurately reflects light similar to genuine TZP ceramic. Additionally, APSF’s spline screws feature tighter threading tolerances, reducing the risk of stripping during routine servicing.
Full Disclosure: The manual winding action on the APSF clone movement feels slightly stiffer than the buttery-smooth feedback of the genuine grade 5 titanium RMUL2 gear train.
Data Sheet
| MODEL REFERENCE | RM 055 Black Ceramic |
| FACTORY / VERSION | APSF Edition |
| MOVEMENT | Clone RMUL2 Manual Winding |
| CASE MATERIAL | Black Ceramic & Titanium |
| CRYSTAL & LUME | Scratch-Proof Sapphire | Standard Super-LumiNova |
| DIMENSIONS | 49.90MM × 42.70MMManual measurements — minor tolerances apply. |
| WATER RESISTANCE | 30m stated rating — professional pressure test recommended before swimming |
Collector Q&A
Q: Does the APSF RM 055 use real ceramic for the case components?
A: Yes, APSF utilizes a high-density black ceramic for both the front and rear bezels. This material accurately mimics the matte, micro-blasted finish of genuine TZP ceramic and provides superior scratch resistance compared to PVD-coated steel.
Q: Is the movement a true RMUL2 clone or a decorated standard caliber?
A: The APSF utilizes a custom-modified manual winding movement designed specifically to replicate the skeletonized architecture of the RMUL2. While the visual depth and gear train layout are highly accurate, it is a structural clone rather than a 1:1 functional replication of the genuine grade 5 titanium baseplate.
Q: Are the spline screws functional or purely decorative?
A: The titanium spline screws on the APSF case are fully functional. They physically secure the three-part tonneau case construction together and require a specialized multi-point driver for any disassembly or servicing.
Q: Why is this sometimes listed as a ‘Tourbillon’ when the genuine RM 055 is not?
A: The replica market frequently categorizes exposed, skeletonized balance wheels as ‘tourbillons’ for search visibility. The genuine RM 055 features a standard free-sprung balance, and this APSF replica correctly mimics that standard escapement, despite the misleading naming convention often used by dealers.
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