IWC Portofino Enamel Dial Ref.3513-1 34.0mm C.37521 1994

The quintessential minimalistic timepiece, the IWC Portofino 3513-1. With its clean enamel dial as white as fine china, and a sleek set of steel hands perfectly matching the aesthetic. It’s a gorgeous showcase of IWC’s lesser known side of elegant watches that has been around for over a hundred years. Paired with its original stainless steel buckle and a beautiful handmade crocodile leather strap, making it the perfect piece to slide under the cuff of a dress shirt or an everyday classic.

In addition, this timepiece comes freshly serviced with all parts laid out by our professional watchmaker for all to see in the images above. Little to no other dealers do this and it’s a testament to full transparency here at Montre D’or. With the C.37521 inside running excellently as shown in the timegrapher reading above, just like it was when it left the factory over three decades ago.

DIAL:
• Original white enamel dial in gorgeous vintage condition with subtle marks of age

• Elegant steel stick style hands in a perfect minimalistic look
• Applied steel stick hour indices, crisp and clean

• Applied IWC logo and original cursive wording

• Date window at 3 o’clock with quickset feature
• Original domed sapphire crystal

CASE:
• Slim and refined round Portofino case design, professionally polished to retain all edges

• 34.0mm (excluding crown) / 39.0mm lug-to-lug / 7.0mm thickness
• Stainless steel construction in excellent condition

• Original IWC fish logo crown at 3 o’clock

CASEBACK:
• Screw-on stainless steel caseback with a mix of brushed and polished surfaces

• Clean and sharp professionally polished to perfection

• Comes with plastic protective sticker as shown

MOVEMENT:

• IWC caliber C.37521 – Automatic High Beat movement

• 21 jewels / 42 hour power reserve / 28,800 mph

• Date quickset functionality (Avoid 9pm-3am when doing so)

• Movement freshly serviced and in excellent condition
• Last serviced: June 2026

• Accuracy: +1.0s/day

STRAP & BUCKLE:

• Handmade leather strap, colour and design can be changed upon request depending on availability

• Aftermarket Omega stainless steel buckle

AFTERCARE PACKAGE:

• Comes with a black presentation box + silica gel

• Free PolyWatch Acrylic Crystal Polishing kit

• Warranty/Service history card for easy future sale

• 6-Month warranty (non-user damage)
• Exclusive Post-warranty service access

• 7-day return policy for peace of mind

SPECIFICS

Maker: IWC
Model: Portofino

Year: 19941

Case Material: Stainless Steel

Reference: 3513-1
Case Serial number: 2576350

Movement Serial number: 2507978

Caliber: C.37521
Diameter: 34.0mm
Lug to lug: 39.0mm

Lug width: 18.0mm
Thickness: 7.0mm

Lume: NIL

Bracelet/strap: Handmade Crocodile Leather

Clasp: Original IWC stainless steel clasp
Box and papers: NIL

Accuracy: +1.0s/day

Movement type: Automatic

Jewel count: 21 jewels

Power reserve: ~42 hours
Frequency: 28,800 vph

Crystal: Original IWC domed sapphire

Crown: Original IWC fish logo crown

Last service: June 2026

Free express tracked shipping with signature upon delivery. Delivery within Singapore in 1-2 working days. International shipping may take 2–12 working days depending on destination and will be shipped via FedEx/UPS/Aramex

Do note respective custom duties might apply which includes the recent US tariffs and are the buyer's responsibility.

Do note that for US bound shipments the PolyWatch polishing kit will not be included in order to mitigate customs delay due to new customs requirements

Countries that we do not ship to: Afghanistan, Belarus, the Central African Republic, Chad, Cuba, the Democratic Republic of the Congo, Eritrea, Iran, Iraq, Lebanon, Libya, North Korea, Oman, Pakistan, Russia, Somalia, South Sudan, Syria, Ukraine and the Crimea, Donetsk, and Luhansk regions of Ukraine.

This is a vintage timepiece and water resistance is not guaranteed. Please avoid contact with water or moisture. Store the watch with dry tissue or silica gel to preserve its condition. We are not liable for water damage post-purchase.