IWC Calatrava Pie-Pan C.8531 35.0mm 1962

Most collectors might know about Omega's vastly overhyped Pie-Pan Constellations, however little know that IWC made some absolutely gorgeous pieces as well. With this pristine example here in their early 60s classic "Calatrava" lineup. With a pristine Pie-Pan cream dial that has barely aged a day and a gorgeous perfectly fitting 35.0mm case size. Making it the perfect collector's piece for those with an eye for the more special pieces.

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 Cal. 8531 inside running excellently as shown in the timegrapher reading above, just like it was when it left the factory nearly half a century ago.

DIAL:

• Original pie-pan cream dial in excellent condition

• Gorgeous stunning dauphine hands with no lume

• Applied bullet shaped steel hour indices

• Painted cursive IWC logo and original wording

• Date window at 3 o’clock, perfectly in line with cyclopes

CASE:

• Distinctive Calatrava-style three-piece case with sweeping lugs

• 35.0mm diameter (excluding crown) / 42.0mm lug-to-lug / 11.0mm thickness

• Professionally polished while retaining sharp edges

• Original fish logo crown at 3 o’clock

CASEBACK:

• Snap on caseback with beautiful contrasting brushed and polished surfaces

• Clean, sharp, professionally polished to perfection

• Comes with plastic protective sticker as shown

MOVEMENT:

• IWC Caliber 8531 – automatic movement with date (Pellaton winding system)

• Quickset date changed by turning minute hand between 9pm and 12am

• 21 jewels / 44-hour power reserve / 19,800 vph

• Movement freshly serviced and in excellent condition

• Last serviced: August 2025

• Accuracy: +2.0s/day

STRAP:

• Handmade Black Ostrich Leg Leather Strap, 18mm lug width

• Aftermarket Omega-signed stainless steel buckle

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: Calatrava

Reference: C.8531

Case Material: Stainless steel

Year: 1962

Case Serial Number:

Movement Serial Number:

Caliber: IWC Caliber 8531 (Automatic, Pellaton winding, date)

Movement Type: Automatic

Power Reserve: 44 hours

Accuracy: +2.0s/day

Diameter: 35.0mm

Lug to Lug: 42.0mm

Thickness: 11.0mm

Lug Width: 18.0mm

Lume: NIL

Bracelet: Handmade Ostrich Leg leather

Box and papers: NIL

Crystal: Original IWC Domec Acrylic

Crown: Original fish logo crown

Last Service: August 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.