The Timepiece Journal » watch authentication

Thinking of buying a pre-owned Jaeger-LeCoultre? This authentication guide covers 7 key checks — from the caseback stamp to movement finishing — to help you tell a genuine JLC from a fake.

Cartier watches — the Tank, Santos, and Ballon Bleu — are among the most counterfeited luxury timepieces in the world. This guide covers 11 specific authentication tests to verify any Cartier watch before buying.

The Tudor Black Bay is one of the most popular dive watches in the world — and increasingly a target for counterfeiters. This guide covers 10 specific authentication tests to verify any Tudor Black Bay before buying.