IWC automatic Calatrava 8531 Cosigned Turler

WC Cal. 8531 – Pie-Pan TURLER Dial
Circa 1960s

A beautifully preserved example of mid-century IWC refinement, showcasing the revered calibre 8531 paired with a pie-pan TURLER-signed dial—an intersection of technical excellence and retailer-specific rarity. The dial presents a super even, naturally developed patina that adds warmth and texture without compromising legibility, giving this watch the distinguished presence only time can create.

The pie-pan profile sharpens the light play across the dial surface, echoing the era’s finest Swiss dress watch design language. TURLER signature at six denotes an original retailer collaboration, adding a layer of provenance and desirability prized by informed collectors.

At the heart of this piece sits the in-house calibre 8531—part of the engine family often cited as among the finest automatic movements of its time. Albert Pellaton's winding system remains a technical highlight, celebrated for durability, efficiency, and quiet mechanical intelligence. Smooth, confident winding and consistent amplitude speak to the robust spirit behind the elegant exterior.

Case lines remain crisp with clearly defined lugs and bezel geometry, underscoring careful stewardship. Paired with a refined leather strap for a balanced, period-appropriate presentation that suits both modern and classic wardrobes.

• Reference: 8531
• Movement: In-house calibre 8531, Pellaton winding system
• Dial: Pie-pan, TURLER-signed, beautifully even patina
• Era: 1960s
• Strap: Leather, handmade in Croatia 

A poetic expression of IWC’s golden-age craftsmanship—discreetly rare, quietly confident, and rich with authentic character.