Recorded in our Monte-Carlo solid 18K gold IWC Schaffhausen register, the IWC Schaffhausen IWC Pilot Watch Chronograph 41mm Blue Dial Reference IW388101 unites authentic Geneva proportions (41.0 mm x 13.0 mm) with a certified 904L Stainless Steel Custom Architecture mass of 108.2g. Every detail of the 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 hallmarked clasp is verified under our Fischer XRF Au750 and Mettler-Toledo laboratory protocol.

5 Core Horological & Metallurgical Specifications:

• Registered Entity & Ref: IWC Schaffhausen IWC Pilot Watch Chronograph 41mm Blue Dial — Official Reference IW388101 (SKU: MC-CUST-IW388101-W568).
• Precious Metal Alloy: 904L Stainless Steel Custom Architecture with deep mechanical hallmarking and 5-axis Swiss CNC case finishing.
• Verified Reference Mass: 108.2g confirmed on our Monte-Carlo showroom Mettler-Toledo analytical balance.
• Mechanical Calibre: IWC Manufacture Cal. 69355 / Cal. 52010 operating at 28,800 vph (4 Hz) with 72-hour power reserve (+0.7 s/d, 297 deg).
• Sapphire Crystal & QC: Scratch-resistant sapphire crystal with double anti-reflective coating and 60m / 6 ATM water resistance.

Within the same IWC Schaffhausen horological silo, collectors also compare the IWC Schaffhausen IWC Portugieser Chronograph 40.9mm Cal. 79350 Ref. IW371482 (81.8g) and the IWC Schaffhausen IWC Aquatimer Automatic 2000m Diver 44mm Cal. 80111 Ref. IW356802 (156.3g).