Blancpain 0021-3427-55, Unknown, 33.6 mm, White

The Blancpain Six Masterpiece Ultra Slim 0021-3427-55 is a rare and elegant men’s watch that reflects the brand’s dedication to traditional mechanical watchmaking. As part of the prestigious “Six Masterpieces” collection—created to mark Blancpain’s revival after the quartz crisis—this model showcases the brand’s craftsmanship through its ultra-thin, manually wound movement. Housed in a 33.6mm platinum case with a see-through caseback, it offers a refined and minimalist design, enhanced by a clean white dial with Roman numerals. Blancpain, founded in 1735, holds the title of the world’s oldest watchmaker and remains committed to producing only mechanical watches. This particular piece has been fully overhauled and is fitted with a new Cassis alligator strap. Its slim profile, historical significance, and high-end finishing make it a prized collector’s item for those who appreciate pure horology.