Designer Collector’s Guides

Explore our Designer Collector’s Guides

Discover the people and stories behind the houses, understand their labels and lines, and learn which details to look at more closely.

72 designer guides · House history · Clothing and care labels · Codes and references

These are educational references. For a question about a particular piece, send us its SKU and clear photographs of the complete item and its labels. Labels and identifiers provide context; an item-specific authenticity conclusion requires a whole-item review.

Sui Generis Intelligence

Check a Serial, Date or Product Code

Enter the designer and the identifier exactly as it appears on the item. Sui Generis Intelligence applies documented designer-specific code rules and reference records where available. A matching number can provide context, but it cannot authenticate an item by itself.

Useful for documented identifiers such as Louis Vuitton date codes, Gucci style/product references, Chanel historical numeric identifiers, and designer-specific collection or production codes where Sui Generis has a supported rule.