IWC Portofino Enamel Dial Ref.3513-1 34.0mm C.37521 1990

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 perfect condition


• 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


• 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

MOVEMENT:


• IWC caliber C.37521 – automatic 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: September 2025


• Accuracy: +1.0s/day

STRAP & BUCKLE:

• Handmade Black Crocodile leather strap, 18.0mm lug width


• Original IWC stainless steel clasp

AFTERCARE PACKAGE:


• Comes with a black wooden box + silica gel


• Free PolyWatch Acrylic Crystal Polishing kit


• Warranty/Service history card for easy future sale


• 1-Month warranty (non-user damage)


• Exclusive Post-warranty service access


• 7-day return policy for peace of mind

SPECIFICS


Maker: IWC


Model: Portofino


Year: 1990


Case Material: Stainless Steel


Reference: 3513-1


Case Serial number: 2464106

Movement Serial number: 2436466


Caliber: C.37521


Diameter: 34.0mm


Lug to lug: 39.0mm


Lug width: 18.0mm


Thickness: 7.0mm


Lume: NIL


Bracelet/strap: Aftermarket black ostrich leather strap


Clasp: Original IWC stainless steel clasp


Box and papers: NIL


Accuracy: +1.0 s/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: September 2025

Free tracked shipping via SingPost. Delivery within Singapore in 2–3 working days. International shipping may take 4–16 working days depending on destination. Do note respective custom duties might apply.

Countries that we do not ship to: Algeria, Nepal, Pakistan, Russia, Vietnam, Iran.

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.