The Timepiece Journal » luxury watches

The Geneva Seal certifies craftsmanship. COSC certifies accuracy. Learn the key differences between these two respected Swiss watch certifications.

The Geneva Seal is one of watchmaking's most respected quality hallmarks. This complete guide explains what it certifies, how it differs from COSC, and why it matters.

Every question about "Swiss Made" watches answered clearly and honestly — what it means legally, whether it guarantees quality, how to spot fakes, and the ongoing industry debate over the standard.