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Description
ZF IWC Portugieser Automatic 40 Green Dial IW358310
ZF delivers a highly precise execution of the time-only Portugieser, mastering the complex green sunburst dial and critical sub-dial spacing.
Powered by Custom Clone Caliber 82200
The driving force behind this replica is a heavily modified Asian base caliber, re-engineered to reflect the visual architecture of the IWC Caliber 82200. The movement features custom-engraved bridges, perlage finishing on the base plates, and a skeletonized rotor showcasing faux Pellaton winding system components. Crucially, the gear train has been modified to ensure the small seconds sub-dial sits at the mathematically correct distance from the central pinion, avoiding the structural tells of earlier generation replicas.
This custom clone movement typically operates within a tolerance of ±10–15 seconds per day, depending on resting position and power reserve state.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: Running small seconds at 6 o’clock
- ✅ Winding Direction: Bidirectional via central rotor
Technical Specifications
The 40.4mm case balances a polished ultra-thin bezel with vertically brushed mid-case flanks. The lug curvature and overall thickness closely mirror the genuine article, providing an elegant wrist presence.
Featuring a dynamic forest green sunburst finish, the dial includes three-dimensional applied Arabic numerals, a crisp railway track scale, and a snailed (record pattern) finish on the small seconds dial.
The signature Portugieser bezel is exceptionally thin, maximizing the dial aperture. The high-polish finish transitions seamlessly into the domed sapphire crystal.
Fitted with an alligator-embossed calfskin leather strap and a stainless steel IWC-style deployant clasp, featuring accurate deep-milled engravings on the inner folding mechanism.
Why ZF for This Reference?
Many collectors ask: “Why not YLF or APSF?”
ZF has historically dominated the IWC Portugieser market due to their superior dial finishing and structural modifications. For the IW358310, ZF successfully resolved the central pinion to sub-dial spacing issue that plagues alternative factories using standard Miyota bases. Additionally, the depth of the sunburst effect on ZF’s green dial provides a much closer light-play match to the genuine lacquer.
Full Disclosure: The rotor bearing can be slightly audible during vigorous wrist movement, and the factory-supplied calfskin strap lacks the suppleness of the genuine Santoni leather, prompting many owners to upgrade to an aftermarket strap.
Data Sheet
| MODEL REFERENCE | IW358310 |
| FACTORY / VERSION | ZF Edition |
| MOVEMENT | Clone Caliber 82200 |
| CASE MATERIAL | 316L Stainless Steel |
| WEIGHT & THICKNESS | ~85g (with strap) | 12.4mm |
| CRYSTAL & LUME | Sapphire with double AR | Non-luminous (dress specification) |
| DIMENSIONS | 40.4mm × 49.0mm × 12.4mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE | 50M stated — professional pressure test recommended before swimming |
Collector Q&A
Q: Does the sub-dial spacing match the genuine IW358310?
A: Yes, the ZF clone 82200 movement modifies the gear train to ensure the small seconds sub-dial at 6 o’clock is positioned at the exact distance from the central hands as the genuine, avoiding the ‘high sub-dial’ flaw of older replicas.
Q: How accurate is the green dial color on this ZF model?
A: ZF has achieved a highly accurate sunburst green tone. Under direct light, it exhibits the correct dynamic shift, though side-by-side with genuine, the replica’s lacquer base may appear marginally less deep under low-light conditions.
Q: Is the movement a true clone or a decorated Asian ETA?
A: It is a heavily modified Asian base movement with custom bridges and a decorated rotor designed to mimic the architecture of the IWC caliber 82200, including faux Pellaton winding system components.
Q: What is the most noticeable flaw on this specific replica?
A: The most common collector critique is the stiffness of the factory-supplied leather strap and a slightly noisy rotor during rapid wrist movement. Many owners opt to swap the strap for an aftermarket or genuine leather alternative.
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