The Monogram encyclopedia
Our encyclopedia documents the maisons and models that pass through our authentication desk: history, references, materials, date codes and the checkpoints our experts use.
Request a free valuationMaisons and models
Each maison entry covers its emblematic lines, the materials used across decades, and the markings that let you date a piece. Model entries add the reference-by-reference detail: dimensions, hardware variations and the details counterfeiters most often get wrong.
Written by authenticators
These pages are written by the specialists who inspect the pieces we sell, using our own condition reports. They are documentation, not sales copy — nothing on them implies a piece is currently available.
Frequently asked questions
- Can the encyclopedia authenticate my piece?
- It helps you check the obvious markers, but a verdict requires physical inspection. Send photographs through our valuation service for an expert opinion.