Unworn IWC Portofino Hand-Wound Eight Days, Stainless Steel, 45mm, Ref# IW510103, box and papers

Introducing the unworn IWC Portofino Hand Wound Eight Days 45mm, Ref# IW510103 a study in classical design paired with exceptional mechanical endurance. The polished stainless steel round case measures a balanced 45mm in diameter with a refined 12mm thickness, delivering strong presence while maintaining elegant proportions. Polished yellow gold–plated hands in an elegant leaf-shaped profile distinguish the silver dial for the hours and minutes. Matching applied index and Roman numeral hour markers reinforce the watch’s timeless character. A finely printed black track displays minutes, seconds, and fractions of seconds, with Arabic numerals marking each five-minute increment for precise legibility. The dial layout is thoughtfully organized: a small second’s sub-dial rests at 6 o’clock, the power reserve indicator at 9 o’clock, and a date window at 3 o’clock, creating visual symmetry and functional clarity. Protecting the display is an arched-edge sapphire crystal with anti-reflective coating on both sides. The fixed polished stainless steel bezel frames the dial with understated refinement. At its core lies the hand-wound IWC Caliber 59210, operating at 28,800 vibrations per hour and constructed with 30 jewels. The movement delivers an impressive eight-day power reserve. Notably, while mechanically capable of running up to nine days, the mechanism is intentionally stopped before the mainspring’s torque diminishes, ensuring consistent timekeeping performance throughout its full operational span. The beautifully finished movement can be admired through the transparent case back. Completing the timepiece is a brown alligator leather strap by Santoni, secured with a stainless steel tang buckle. With water resistance rated to 30 meters (99 feet), this Portofino embodies enduring craftsmanship, balanced aesthetics, and remarkable mechanical autonomy.

• Make: IWC
• Model: Portofino Hand Wound Eight Days
• Reference: IW510103
• Diameter: 45mm
• Case material: Polished Stainless Steel
• Dial color: Silver
• Bezel Type: Fixed
• Bezel Color: Silver
• Bezel Material: Polished Stainless Steel
• Crystal: Scratch-resistant sapphire convex, antireflective coating on both sides
• Movement: Manual-wind movement
• Bracelet Type: Strap
• Bracelet Material: Brown alligator leather by Santoni
• Clasp: Stainless Steel Tang Buckle
• Functions: Date, Central Hour and Minute, Power reserve indicator, Small hacking second’s sub-dial
• Water resistance: Up to a 30m/99ft (3ATM)
• Warranty: Balance of IWC 2 years International Warranty

The watch is unworn and comes complete with full set of original accessories, such as watch box, warranty card dated recently, booklets and manuals.

All Pre-Owned Rolex watches are guaranteed to be 100% genuine and certified authentic. Certificates are issued by Watch CSA, the industry's leading independent authority on watch authentication.

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We offer a 3-day return period on eligible watches, starting from the date of delivery. To qualify, the watch must be returned in the same condition as received—unworn, unaltered, and with all original packaging, tags, and accessories included.

All returns must be approved in advance. Once received and inspected, refunds are processed promptly back to the original payment method.

For full details on eligibility, conditions, and the return process, please refer to our Return Policy.