Authentication tools:
Date code & Serial number checkers
Use these tools to interpret brand-specific production codes with confidence. Each checker helps you identify the format, estimate a production period, and understand what a code can and cannot prove.
Available tools
What a code checker can actually tell you
A date code or serial number is a useful clue, but only one clue. A correct reading can help you identify a likely production window, decode factory or atelier markers, and spot obvious format inconsistencies.
What it cannot do is authenticate the item on its own. Counterfeit pieces often carry convincing, format-correct codes precisely because these patterns are widely copied. If the outcome matters to a purchase, resale, claim, or dispute, the next step is not more decoding. It is a full item-level review.
This hub gives you fast, brand-specific code interpretation. Our expert service goes further by assessing the item itself: materials, hardware, stitching, stamps, proportions, and era consistency.
Need an authentication opinion, not just a code reading?
If you need a decision you can actually act on, our specialists review the item itself, not just the identifier. We assess the physical details that determine authenticity and issue a written expert opinion.