IWC Calatrava Turler Roman Dial 818AD C.8541B 35.0mm 1973

An extremely rare and collectible piece, sold by Swiss retailer Turler and hence coming with a double signed Turler dial combined with a very rare half roman numeral hour indexes across the champagne sunburst dial. A very sleek and classic combination that is not found in many of today's large and sporty watches. Not to mention the perfect elegent IWC logo in cursive that ties the whole dial together brilliantly. It's truly a timepiece that is not to be missed.

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 very rare Türler signed half Roman‑numeral dial in excellent condition (no lume, crisp contrast)

• Sleek original black pencil‑shaped hands

• No lume, Roman numerals and applied indexes

• Applied “IWC” logo at 12 and “AUTOMATIC” at 6 in script

• Domed acrylic crystal, IWC‑signed at center

CASE:

• Stainless steel case in excellent condition, professionally polished while retaining sharp edges

• Mirror-polished finish, slim profile, original fish-logo signed crown

• 35.0 mm (without crown) / 41.5 mm lug-to-lug / 10.0mm thickness

• Year: 1973

• Reference: 818AD

• Case Serial: 2084732

MOVEMENT:

• IWC Caliber C.8541B – Automatic with Pellaton winding system and semi- quickset date (Set by turning minute hand between 9pm-12am)

• 44 hours Power Reserve / 23 Jewels / 19,800 vph

• Freshly serviced: January 2026

• Accuracy: ~0s/day

• Movement Serial: 1962304

STRAP & BUCKLE:

• Handmade Black Crocodile Leather Strap, 18mm lug width

• Aftermarket IWC signed stainless steel buckle

AFTERCARE PACKAGE:

• Comes with a black wooden box + silica gel

• Free PolyWatch kit (for acrylic crystal only)

• 6-month warranty (non-user damage)

• Warranty card included with full service history

• Exclusive repair service post-warranty

• 7-day return policy for peace of mind

Specifics

Maker: IWC

Model: Calatrava Automatic Date

Year: 1973

Case Material: Stainless Steel

Reference: 818AD

Movement Serial number: 1962304

Case Serial number: 2084732

Caliber: C.8541B

Diameter: 35.0mm

Lug to lug: 41.5mm

Lug width: 18.0mm

Thickness: 10.0mm

Lume: NIL

Strap: Handmade Black Crocodile Leather 

Box and papers: NIL

Accuracy: ~0s/day

Movement type: Automatic

Crystal: Original IWC Domed acrylic

Crown: Original Stamped IWC fish logo

Last service: January 2026

Free express tracked shipping with signature upon delivery. Delivery within Singapore in 1-2 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 and are the buyer's responsibility.

Do note that for US bound shipments the PolyWatch polishing kit will not be included in order to mitigate customs delay due to new customs requirements

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.