Triple Certified Observatory Chronometer

• Limited Edition: Each of the 8 timepieces delivered with three observatory certificates
• Case: 904L highly corrosion-resistant stainless steel
• Size: 44 mm x 12.2 mm
• Movement: Mechanical with manual winding Double wheel escapement with central impulses (CIC) Frequency: 21,600 vibrations per hour (3 Hz)
• Function: hours, minutes and two sub-seconds counters
• Power Reserve: approximately 38 hours
• Water Resistance: 30 m
• Dial: Made in-house from solid sterling silver
• Caseback: sapphire crystal
• Strap/Bracelet: alligator leather strap with folding buckle

In the world of horology, where precision and artistry intertwine, the Triple Certified Observatory Chronometer emerges as a remarkable testimony of excellence. With a legacy infused in the pursuit of accuracy, this timepiece stands apart, captivating the hearts of collectors and enthusiasts alike.

What sets the LEDERER Triple Certified Observatory Chronometer apart is its exceptional certification. It is a rarity to achieve three separate Observatory Chronometer certifications, underscoring its unique status in a competitive industry. After receiving its COSC certification, this watch underwent additional rigorous testing, an unprecedented endeavour that elevates it to a realm where precision is not just an aspiration but a proven reality.

The initial test yielded an astonishing maximum deviation of only +0.5 seconds per day across five positions, far surpassing the permissible limit of 8 seconds. With an average deviation of just 0.18 seconds per day well below the 6 seconds allowed, this chronometer exemplifies the superior savoir-faire that defines exceptional watchmaking. Such results are not merely numbers; they tell a story of meticulous engineering and relentless quest for perfection.

Historically, precise timekeeping was essential for navigators charting their courses in the open seas, where every second counted. Just a one-second deviation could translate into a positioning error of nearly 500 meters at the equator. The implications are surprising: a COSC-certified watch can allow for deviations that, over time, can lead to miscalculations of up to 70 kilometers after a ten-day sailing. LEDERER chronometer overcomes such challenges, equipped with two remontoirs that ensure accurate time is maintained throughout the power reserve without the well-known variation in accuracy caused by the mainspring.

To further emphasize this connection to navigation, each watch has an engraved Compass Rose with the eight main directions, which reveals the series limitation to 8 eight pieces. Each of the eight watches is individually marked using one of the cardinal directions, e.g. N 360°, SW 225°, etc.

LEDERER Triple Certified Observatory Chronometer is more than a mere timepiece, is a masterpiece that embodies rarity, excellence, and a rich narrative tied to the art of navigation. For demanding collectors, it represents a unique opportunity to delve into the story of a watch that transcends the ordinary, inviting admiration for its unparalleled precision and the legacy it carries.