IWC Yacht Club Jumbo R811AD Cal.8541B 36.0mm 1971

An outstanding and rare example from IWC’s famed Yacht Club line, this R811AD from 1971 captures the brand’s engineering prowess and timeless design in a robust yet elegant C-shaped true Jumbo 36.0mm size case. Making the perfect unique watch for everyday wear that helps you stand out from the crowd with it’s uniqueness.

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.8541B 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 silver sunburst dial with a unique subtle even patina across

• Mirror-polished baton hands with black inlays and tritium lume

• Applied baton hour markers with black inlays and tritium plots

• Raised circular steel minute markers for added depth

• Central sweeping seconds hand

• Domed acrylic crystal, signed with IWC logo at center

CASE:

• Stainless steel C-shaped case with brushed surfaces and polished bezel, professionally polished while retaining sharp edges

• 36.0mm diameter / 44.0mm lug-to-lug / 12.0mm thickness

• Signed screw-down case back with alternating brushed and polished finish

• Original IWC-signed crown with fish logo

• Case serial: 1930233

MOVEMENT:

• IWC Caliber C.8541B – Automatic with date

• In-house movement with Pellaton winding system

• Movement serial number: 1974690

• Freshly serviced: November 2025

• Accuracy: ~0s/day

STRAP & BUCKLE:

• Handmade black crocodile leather strap, 18.0mm lug width

• Aftermarket IWC signed stainless steel buckle

AFTERCARE PACKAGE:

• Comes with a black wooden box and silica gel packet

• Free PolyWatch kit (for acrylic crystal maintenance)

• Warranty card included with full service history

• 1-month warranty covering non-user-caused damages

• Exclusive repair service available post-warranty

• 7-day return policy for peace of mind

Specifics

Maker: IWC

Model: Yacht Club

Year: 1971

Case Material: Stainless Steel

Reference: R811AD

Case Serial Number: 1930233

Movement Serial Number: 1974690

Caliber: C.8541B

Case Diameter: 36.0mm

Lug-to-Lug: 44.0mm

Thickness: 12.0mm

Lug Width: 18.0mm

Lume: Tritium

Strap: Handmade black crocodile leather

Buckle: Aftermarket IWC signed stainless steel

Box and papers: NIL

Accuracy: ~0s/day

Movement Type: Automatic

Crystal: Original IWC-signed domed acrylic

Crown: Original IWC-signed with fish logo

Last Service: November 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 which includes the recent US tariffs.

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.condition. We are not liable for water damage post-purchase.