1970s IWC Cal.8541B Calendar Automatic Water-resistant Rare "σ" Dial in 18K Yellow Gold

Manufacturer IWC
Model Round Automatic
Year of Manufacture 1970s
Reference no. 1818
Product no. B-10581
Manufactured in the 1970s, this is a rare and beautiful timepiece featuring an IWC Cal.8541B automatic movement, housed in an 18k yellow gold waterproof case with a snap-back. It is equipped with a rare sigma (σ) dial. The self-winding Cal.8541B movement is a proprietary creation of IWC. This vintage IWC model boasts top-class practicality with features such as a quick-set calendar, second-hand hacking device, and a snap-back waterproof case. The use of gold in the dial material, indicated by the sigma (σ) symbol, and the solid 18k gold waterproof case give it an exquisite and luxurious appeal.
Add to Favorites Inquire about this product

Item details

Serial no. 2,137,***
Caliber 8541B
Movement no. 2,069,***
Movement type Automatic
Material 18K Yellow Gold
Case size 35mm
Case type Snap back Water-resistant
Dial Original
Type of Indices Applied & Luminous
Belt non Original (18mm, between lugs)
Evaluation case 93%
Evaluation dial 93%
Evaluation mov 93%
Condition 4.5
Rarity 4.5

Other details

Case: Minor scratches and ageing, but retains its original shape and volume, as well as the engraving and hallmarks on the back.

Dial: slight ageing, but clean with no visible scratches or stains.

Movement: There are no problems with winding, calendar switching, or second hand regulation. Accuracy is around 20 seconds per day.