Skip to product information
IWC Schaffhausen IW458104 Portofino Automatic 37 Ardoise Diamond Stainless Steel Set with Diamonds Grey Leather 37mm Automatic

IWC Schaffhausen IW458104 Portofino Automatic 37 Ardoise Diamond Stainless Steel Set with Diamonds Grey Leather 37mm Automatic

$8,299.00

*As with all fine timepieces, prices and availability are subject to market conditions and do not constitute a binding agreement.

By IWC

Sell or Trade
IWC Schaffhausen IW458104 Portofino Automatic 37 Ardoise Diamond Stainless Steel Set with Diamonds Grey Leather 37mm Automatic

IWC Schaffhausen IW458104 Portofino Automatic 37 Ardoise Diamond Stainless Steel Set with Diamonds Grey Leather 37mm Automatic

Current Market Valuation:

Your Offer

$

Most accepted offers fall within 1–5% of market valuation

Preferred Contact Method
I have a trade-in / add a note
IWC Schaffhausen IW458104 Portofino Automatic 37 Ardoise Diamond Stainless Steel Set with Diamonds Grey Leather 37mm Automatic

Reserve with a $200 Deposit

IWC Schaffhausen IW458104 Portofino Automatic 37 Ardoise Diamond Stainless Steel Set with Diamonds Grey Leather 37mm Automatic · $

  • A fully refundable $200 deposit secures this watch and confirms your order.
  • The balance of $ is paid by bank wire — instructions are emailed to you right after checkout.
  • Market prices move: if the price changes or we cannot secure the piece, your deposit is refunded in full.
  • A specialist confirms your order personally within hours; your watch ships fully insured once the wire clears.
  • Complimentary bracelet sizing before shipping — how to measure your wrist.

The deposit is a commitment to buy — not a hold while you decide. By continuing you confirm you intend to complete the purchase by bank wire.

Prefer to arrange everything personally? WhatsApp a specialist

Speak with a Bizak & Co. specialist about this piece

|Call or Text

The IWC Schaffhausen Portofino Automatic IW458104 is a new 37mm stainless steel dress watch featuring a striking ardoise (grey) dial and bezel both set with factory diamonds, paired with a supple grey leather strap. This reference brings IWC's signature understated elegance together with brilliant diamond embellishment, making it one of the most refined expressions of the Portofino line available for sale today.

Reference IW458104 stands out for its seamless combination of Swiss automatic movement, diamond craftsmanship sourced directly from the factory, and a versatile 37mm case size that sits beautifully on a wide range of wrists. Contact Bizak & Co. to buy this IWC Portofino online at the best price, backed by our commitment to authenticity and white-glove service.

Compare it across every Portofino reference we carry, or browse the full IWC Schaffhausen collection at Bizak & Co.

Buy this Portofino, trade in your current watch, or sell us yours. Contact Bizak & Co. to make an offer or request a fair-market valuation.

Not the exact one you’re looking for?

Source your dream watch

Learn More

The IWC Portofino collection has long stood as the purest expression of IWC Schaffhausen's philosophy that true luxury lies in refined restraint. Introduced as a tribute to the sun-drenched Italian fishing village of the same name, the Portofino line distills decades of Swiss watchmaking heritage into clean, uncluttered dials, slim cases, and elegant leather straps — a formula that has earned it devoted admirers from New York to Milan. Reference IW458104 represents the collection at its most glamorous, layering brilliant diamond setting onto that timeless foundation without disturbing the watch's essential calm.

The 37mm stainless steel case of the IW458104 is sized with deliberate intention. Large enough to make a statement on the wrist yet measured enough to slip gracefully beneath a cuff, this diameter has become something of a sweet spot for those who appreciate a dress watch that is neither overwhelmed by excess nor lost in minimalism. The polished stainless steel case is finished to IWC's exacting standards, with smooth curves that catch and return light in a manner that feels organic rather than ornate.

The ardoise dial — a deep, sophisticated grey with subtle warmth — is elevated by factory-applied diamond accents that confirm this watch as a genuine manufacture diamond piece rather than an aftermarket modification. The diamond-set bezel frames the dial with a continuous arc of brilliance, complementing the dial stones in a way that feels cohesive and intentional. Grey as a dial colour is prized by collectors precisely because it shifts character with available light: reading as near-charcoal in shade and luminous silver in sunlight, it gives the IW458104 an unusually versatile personality.

Powering the IW458104 is an IWC automatic movement, a testament to the manufacture's long commitment to in-house Swiss engineering. Automatic winding means the watch sustains itself through the natural motion of the wearer's wrist, requiring no battery and offering the satisfying ritual of a self-winding mechanism. IWC's automatic calibers are renowned for their reliability and smooth regulation, qualities that make the Portofino as practical as it is beautiful.

The grey leather strap completes the ensemble with a tactile softness that mirrors the dial's tonal palette. Leather remains the traditional companion to a dress watch, and the colour-matched grey strap demonstrates the kind of considered coordination that distinguishes a factory-configured reference from a custom build. On the wrist, the IW458104 presents as a cohesive composition — case, dial, bezel, and strap speaking a single, quietly confident language.

Bizak & Co. offers this IWC Portofino IW458104 new and at the best price, with the assurance of full authenticity verification that every buyer deserves. Whether you are purchasing your first IWC or adding a diamond Portofino to an established collection, our team is ready to guide you through the process. Explore this reference on bizakandco.com or reach out directly — we make it simple to buy luxury watches online with confidence.

Technical Details

Reference Number IW458104

Model Family Portofino

Movement Automatic

Case Material Stainless Steel

Bracelet Material Leather

Dial Ardoise (Grey) with Factory Diamonds

Case Dimension 37mm

Year

Condition Brand New

Box & Papers

FAQ

1. What makes the IWC Portofino IW458104 special?
The IW458104 distinguishes itself with a factory diamond-set ardoise dial and diamond bezel applied by IWC Schaffhausen directly, ensuring the brilliance is an authentic manufacture specification rather than an aftermarket addition. Combined with a harmonious grey leather strap and the Portofino line's signature minimalist aesthetic, this reference strikes a rare balance between diamond glamour and Swiss understatement.

2. What movement powers the IWC Portofino IW458104?
The IW458104 is driven by an IWC automatic movement, meaning it winds itself continuously through the motion of the wearer's wrist. IWC automatic calibers are respected throughout the industry for their precision, robustness, and low-maintenance reliability in an everyday luxury watch.

3. What is the case size of the IWC Portofino IW458104?
The Portofino IW458104 features a 37mm stainless steel case, a size widely regarded as an ideal fit for dress watch wear. It offers enough dial presence to display the diamond details clearly while remaining elegantly proportioned for both formal and smart-casual occasions.

4. Is the IWC Portofino IW458104 suitable for everyday wear?
Yes — the stainless steel construction, robust automatic movement, and quality leather strap make the IW458104 a capable daily companion. While its diamond bezel and ardoise dial give it undeniable formal appeal, the 37mm case size and Portofino's versatile design language mean it transitions naturally from boardroom to evening without missing a beat.

5. What are the dial and bezel details on the IW458104?
The dial is finished in ardoise, a rich and nuanced grey, and set with factory diamonds supplied and applied by IWC Schaffhausen. The bezel is similarly diamond-set from the factory, creating a unified sparkle around the watch's face that is guaranteed to be an original manufacturer configuration on this reference.

6. How can I buy the IWC Portofino IW458104 and is it a good investment?
You can purchase the IWC Portofino IW458104 new at the best price directly through Bizak & Co. at bizakandco.com or by contacting our team. Factory diamond references from IWC tend to hold collector interest well, and buying new with verified authenticity from a trusted dealer like Bizak ensures you receive the watch in pristine condition with full peace of mind.

Certified Authenticity

Each watch we sell comes with original box & papers.

Real Family Business

You're buying from genuine people, 30 years in business.

Bizak & Co. Warranty

Every watch is checked by us before shipping.

5 Years Warranty

Every watch you buy from us is backed by our 5-year warranty—because luxury should come with long-term peace of mind.

If anything goes wrong mechanically due to a manufacturing issue, we’ll take care of it. No stress. No surprises.

Because trust isn’t built in a transaction—it’s built over time.

90 Day Return Policy

Our costumers trust us and we trust them. That's why we're boldly presenting the best return policy in the industry.

We take all the risk so you don't have to.

Signature personal delivery service

For high-value orders, we offer our exclusive Signature Personal Delivery—where one of our team members personally flies out to hand-deliver your watch.

Because some pieces deserve more than just shipping—they deserve a handshake.

You might also like...