1960's IWC Schaffhausen "Calatrava" Pellaton Caliber. 853

THE WATCH

During the mid-20th century, International Watch Company (IWC) established itself as an engineering first powerhouse, prioritizing mechanical longevity and understated styling. Collectors often label this reference a 'Calatrava" because of its minimalist layout, clean, unbothered lines, and elegant dress proportions. While the exterior represents pure mid-century sophistication, the internal architecture holds true historical prestige. At its core beats the legendary IWC in-house Caliber 853. Developed under the brilliant technical guidance of Albert Pellaton winding system. Unlike conventional automatic rotors of its time, this dual direction mechanism utilizes a specialized cam and pawl design that isolates the movement from heavy shock while offering unmatched winding efficiency. By omitting a date complication, this variant delivers a perfect visual balance, leaving the script signature at 12 o'clock and the "Automatic" stamp at 6 o'clock.

CONDITION REPORT

Case: Good vintage condition. The stainless steel case measures approximately 35mm and presents sharp, correct lines along the bezel, case, and lugs. The case shows honest, age appropriate wear and surface scratches. The inside of the caseback is stamped with the prestigious "Staybrite" mark and original IWC hallmark, retaining beautiful perlage finishing and sharp legible serial number.

Crown: Original and correct non-signed crown that works seamlessly. 

Crystal: Fitted with a dome acrylic crystal in clean condition, beautifully emphasizing the curve of the dial and outer minute track. 

Dial: Genuinely stunning vintage condition. The dial is pristine for its age with minimal aging. The silvery white dial is crisp and delicate pearl dot minute track and applied steel baton indices remain exceptionally uniform.

Hands & Markers: Original and sharp faceted dauphine hands are well preserved with zero heavy corrosion. 

Movement: The in-house Caliber 853 automatic movement is in beautiful, clean mechanical condition. The bridges retain their bright factory finish, and Pellaton winding mechanism operates smoothly. The watch is keeping great time. 

Strap: Paired with a premium, aftermarket stitched tan leather strap. 

SPECS

Brand: IWC 

Model/Ref: "Calatrava" Caliber 853 Series (Ref 309/311)

Movement: In-house Caliber 853 Pellaton Automatic

Year: 1961

Condition: Pre-owned

Case Material: Staybrite Stainless Steel

Dial: Silver/White

Case Diameter: 35mm

Lug to Lug: 42.4mm

Case Thickness: 11.7mm

Lug Width: 18mm

Crystal: Acrylic

Water Resistance: N/A

Strap: Aftermarket Premium stitched tan leather strap

Box & Papers: No

THOUGHTS

This IWC Calatrava is the quintessential definition of "quite luxury." What you get with these vintage IWC dress watches are unmatched in value, specs, and overall build quality. What makes the Caliber 853 series such an irresistible target for serious watch enthusiasts is the stark contrast between its elegant simple appearance and overengineered industrial mechanics. It wears visually laragers than its 35mm proportions thanks to its downward lug profile and clean dial appearance. If your looking to pick up your first vintage watch or looking for something with in-house build quality that can be at home in a dressy or casual environment, you can't go wrong with these vintage IWC automatics. The 1960's IWC dress watches are honestly one of the best values in vintage.