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Description
APSF Audemars Piguet Royal Oak 15400ST Grey Dial
A technical evaluation of APS Factory��s integrated Caliber 3120 clone and 1:1 case architecture.
Powered by Clone Caliber 3120
The mechanical foundation of the APSF 15400 is its dedicated clone Caliber 3120. Moving away from the traditional method of applying decorative plates to a Miyota 9015, this movement is engineered from the ground up to replicate the OEM architecture. This allows the date wheel to sit flush against the dial rather than being recessed, and permits the stem height to align exactly with the 9.8mm case profile. The 21,600 vph beat rate matches the genuine specification, providing the correct sweep for the seconds hand. The 22k gold-plated rotor is mounted on a functional bearing system, delivering efficient winding without the loud freewheeling noise characteristic of older replicas.
卤8��12 s/day. As a true clone movement, it can be regulated by a competent watchmaker to achieve tighter chronometric performance if desired.
- �� Power Reserve: Approximately 36 hours
- �� Complications: Hours, minutes, center seconds, and quickset date
- �� Winding Direction: Bidirectional
Technical Specifications
Constructed to exact 1:1 dimensions, measuring 41mm in diameter and a strict 9.8mm in thickness. The case exhibits precise alternating brushed surfaces and highly polished chamfers along the lug edges.
The dial features the correct grey ruthenium tone with deeply stamped squares and subtle concentric circles. White gold-style applied indices are filled with Swiss-grade luminescent material.
The signature bezel features vertical satin brushing with mirror-polished outer bevels. The eight hexagonal screws are correctly aligned and recessed to match OEM depth.
The bracelet utilizes the correct movable link design at the case head. The AP double folding clasp snaps securely with tight tolerances, minimizing endplay.
Why APSF for This Reference?
Many collectors ask: ��Why not ZF Factory?��
For the 15400 reference, APSF��s deployment of the true clone Caliber 3120 allows for the precise 9.8mm thickness and correct date window placement, whereas older ZF batches relied on modified Miyota movements that introduced rotor noise and slight dimensional variances. Furthermore, APSF��s proprietary bracelet brushing technique yields a softer, more refined light play that closely mimics OEM finishing.
Full Disclosure: The grey dial��s sunburst effect can appear slightly flat under direct, harsh sunlight compared to genuine ruthenium, and the date font occasionally presents marginally thicker than OEM specifications.
Data Sheet
| MODEL REFERENCE | 15400ST.OO.1220ST.04 |
| FACTORY / VERSION | APSF Edition |
| MOVEMENT | Clone AP Caliber 3120 |
| CASE MATERIAL | 316L Stainless Steel |
| WEIGHT & THICKNESS | ~165g | 9.8mm |
| CRYSTAL & LUME | Glareproofed Sapphire | Swiss Super-LumiNova |
| DIMENSIONS | 41.0mm � 51.5mm � 9.8mmManual measurements �� minor tolerances apply. |
| WATER RESISTANCE | 50m stated rating �� professional pressure test recommended before swimming |
Collector Q&A
Q: How does the APSF grey dial compare to the genuine ruthenium dial?
A: The APSF captures the Grande Tapisserie texture accurately, though the sunburst effect can appear slightly more flat under harsh lighting compared to the dynamic light play of the genuine OEM ruthenium finish.
Q: Does this APSF model use a modified Miyota 9015 movement?
A: No. This APSF version utilizes a true clone Caliber 3120 with seamless integrated construction, eliminating the loud unidirectional rotor spin associated with Miyota-based replicas.
Q: Are the bracelet links interchangeable with genuine AP links?
A: Yes, APSF engineered the 15400 case structure and movable link design to 1:1 specifications, allowing for genuine links to be fitted to the bracelet if desired.
Q: What is the main known flaw of this APSF 15400 release?
A: While the case finishing is highly accurate, collectors often note that the date wheel font printing can be marginally thicker than the genuine counterpart, and the rotor bearing may require light lubrication to achieve complete silence.