Gravimetric Mass & Chronometric Assay Bulletin
The IWC Schaffhausen IWC Portugieser Chronograph 41mm Silver-Plated Dial Reference IW371445 is a hallmarked 904L Stainless Steel Custom Architecture haute horlogerie timepiece measuring 41.0 mm x 13.0 mm with a verified Mettler-Toledo mass of 81.4g, powered by IWC Manufacture Cal. 69355 / Cal. 52010 operating at 28,800 vph (+0.8 s/d, 299 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 60m / 6 ATM water resistance.
| I. Official Maison Entity & Reference | IWC Schaffhausen — Portugieser / Pilot / Ingenieur Collection | Ref. IW371445 | SKU: PV-CUST-IW371445-W84 |
|---|---|
| II. Precious Metal Alloy & Hallmark Assay | 904L Stainless Steel Custom Architecture — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| III. Certified Gravimetric Mass (Mettler-Toledo) | 81.4g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| IV. Bezel Setting & Case Architecture | Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 81.4g 904L Steel Edition • 41.0 mm x 13.0 mm |
| V. Mechanical Manufacture Calibre | IWC Manufacture Cal. 69355 / Cal. 52010 — Swiss Super Clone Mechanical Calibre Regulated to +0.8 s/d, 299 deg |
| VI. Power Reserve & Oscillation Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| VII. Double AR Sapphire Crystal & Hermeticity | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 60m / 6 ATM |
| VIII. Dial Finishing, Bracelet & Hallmarked Clasp | 41.0 mm x 13.0 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Hand-Brushed & Chamfered Integrated Solid Link Bracelet & Deployant Clasp |
Curated within our hallmarked solid 18K gold IWC Schaffhausen collection, the IWC Schaffhausen IWC Portugieser Chronograph 41mm Silver-Plated Dial Reference IW371445 exemplifies haute horlogerie metallurgy in 904L Stainless Steel Custom Architecture. Milled to exact manufacture geometry (41.0 mm x 13.0 mm), the monobloc middle case, Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and Hand-Brushed & Chamfered Integrated Solid Link Bracelet & Deployant Clasp achieve a verified analytical mass of 81.4g on our Fischer XRF Au750 and Mettler-Toledo assay bench.
What Are the Horological & Metallurgical Benchmarks of IWC Schaffhausen Portugieser Ref. IW371445?
The IWC Schaffhausen Portugieser Reference IW371445 is a precision-engineered luxury timepiece crafted in 904L Stainless Steel Custom Architecture (41.0 mm x 13.0 mm) with Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and a verified Mettler-Toledo mass of 81.4g, because its IWC Manufacture Cal. 69355 / Cal. 52010 movement is regulated across six positions to chronometric tolerances with a 72-hour power reserve.
5 Core Horological & Metallurgical Specifications:
- Entity & Reference: IWC Schaffhausen IWC Portugieser Chronograph 41mm Silver-Plated Dial — Official Reference IW371445 (SKU: PV-CUST-IW371445-W84).
- Precious Metal Assay: 904L Stainless Steel Custom Architecture verified via non-destructive Fischer X-Ray Fluorescence spectroscopy.
- Gravimetric Parity: 81.4g total mass weighed on a calibrated Mettler-Toledo laboratory scale.
- Calibre & Oscillating System: IWC Manufacture Cal. 69355 / Cal. 52010 beating at 28,800 vph (4 Hz) with a 72-hour power reserve (+0.8 s/d, 299 deg).
- Crystal & Hermeticity: Scratch-resistant sapphire crystal with double anti-reflective coating and 60m / 6 ATM rating.
Within the IWC Schaffhausen Portugieser horological sub-silo, collectors also compare the IWC Schaffhausen IWC Portugieser Chronograph 40.9mm Cal. 79350 Ref. IW371482 (81.8g) and the IWC Schaffhausen IWC Portugieser Automatic 7-Days Power Reserve 42.3mm Cal. 51011 Ref. IW500704 (98.1g).
- Parent Brand & Portugieser Silo Hub: Browse All 8 Certified IWC Schaffhausen Solid 18K Gold & Pt950 Watches
- Technical Research Monograph: Swiss St. Bernard Poincon & Au750 Gold Hallmarks Guide (All 5 Journal Monographs)
- Homepage Master Register: Return to 18K SOLID GOLD Homepage (Complete 774-Watch Solid 18K Gold & Pt950 Register)
- All-Brands Catalogue: Explore Complete 12-Maison Horological Catalogue (/shop/)
- Metallurgical & Escrow Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
What is the verified authentic gram weight of this IWC Schaffhausen Ref. IW371445?
At 18K Solid Gold 18K Solid Gold Salon, this IWC Schaffhausen IWC Portugieser Chronograph 41mm Silver-Plated Dial Ref. IW371445 weighs 81.4g on our Mettler-Toledo analytical balance, matching the exact factory mass of the authentic 904L Steel Edition reference.
How is the 904L Stainless Steel Custom Architecture purity verified prior to dispatch?
Every timepiece undergoes non-destructive Fischer X-Ray Fluorescence (XRF) spectroscopy confirming elemental bullion composition alongside a personalized 4K scale and hallmark inspection video.
Which movement powers Reference IW371445 and what is its power reserve?
Reference IW371445 is equipped with the IWC Manufacture Cal. 69355 / Cal. 52010 operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated in our Paris and Geneva workshop to +0.8 s/d, 299 deg.
What dial and bezel specifications distinguish IWC Schaffhausen Portugieser Ref. IW371445?
Reference IW371445 combines Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands and Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal within a 41.0 mm x 13.0 mm 904L Stainless Steel Custom Architecture case weighing 81.4g, verified via Fischer XRF spectroscopy and powered by IWC Manufacture Cal. 69355 / Cal. 52010.
IWC Schaffhausen IWC Portugieser Chronograph 41mm Silver-Plated Dial Reference IW371445 — Salon Edition
Bespoke Atelier Salon Edition • 81.4g Verified Mass • IWC Manufacture Cal. 69355 / Cal. 52010