IWC Calatrava Jumbo R804A C.8541 36.5mm 1967

A rare and well-preserved example of the IWC Calatrava R804A, notable for its Jumbo 36.5mm case—larger than most men’s watches of the era. This reference from 1968 features a high-polish round case with sharp lugs and houses the robust automatic Caliber 8541  movement. Paired with a near-flawless white sunburst dial with elegant dauphine hands and fine applied markers, the watch offers a timeless and classy design. Perfect for everyday wear or dressing up for the more important occasions.

This piece stands out not only for its beautiful dial and well-balanced proportions but also for its excellent condition, freshly serviced movement, and a professionally polished case thats been brought to near mint condition.

DIAL:

• Original white sunburst dial in outstanding condition

• Sharp dauphine hands with polished finish

• Applied steel indices with black inserts and raised circular minute markers

• Applied crisp "International Watch Co. Schaffhausen" script

CASE:

• 36.5mm Jumbo stainless steel round case

• 44.0mm lug-to-lug / 18.0mm lug width / 9.0mm thickness

• High-polish finish with sharp-edged lugs, professionally detailed

• Original IWC-signed fish logo crown at 3 o’clock

CASEBACK:

• Press-fit caseback with elegant factory brushing

• Clean surface with minimal tool marks

MOVEMENT:

• IWC Caliber 8541 – Automatic with Pellaton winding system

• Date set by moving minute hand between 9pm and 12am repeatedly

• 23 jewels / 40-hour power reserve / 19,800 vph

• Freshly serviced: May 2025

• Accuracy: ~0s/day

BRACELET/STRAP:

• Aftermarket black Ostrich belly leather strap

• Aftermarket IWC-signed stainless steel buckle

• 18mm lug width

AFTERCARE PACKAGE:

• Comes with a sleek black wooden box + silica gel

• Complimentary PolyWatch polishing kit (for acrylic crystal)

• 1-month warranty (non-user damage only)

• Warranty card included

• Access to exclusive post-warranty repair services

• 7-day return policy for peace of mind

SPECIFICS

Maker: IWC

Model: Calatrava

Year: 1967

Case Material: Stainless Steel

Reference: R804A

Case Serial Number: 1862979

Movement Serial Number: 1748931

Caliber: Cal.8541

Power Reserve: 40 hours

Accuracy: ~0s/day

Diameter: 36.5mm

Lug to Lug: 44.0mm

Lug Width: 18.0mm

Thickness: 9.0mm

Lume: NIL

Bracelet: Black Ostrich belly leather strap

Buckle: Aftermarket IWC signed buckle

Box and Papers: NIL

Movement Type: Automatic

Crystal: Original IWC domed acrylic

Crown: Original IWC signed fish logo crown

Last Service: May 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.

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.