• Design ID

    Infographic showing the evolution of LEGO part numbering from Design ID to Element ID
    Parts & Minifigures

    Why Does One LEGO Piece Have Several Numbers? Design ID vs Element ID Explained

    LEGO parts can carry several different numbers. Here is how Design ID, Element ID and BrickLink Item Numbers differ — and which one to use when identifying or replacing a part.

    Posted on The Brick Archivist
    Editorial macro scene showing used brick elements being inspected under a magnifying glass, with molded LEGO marks on studs and the number 3024 visible inside a part.
    Parts & Minifigures

    How to Tell Whether a LEGO Piece Is Genuine: Markings, Part Numbers and Common Traps

    A practical guide to checking whether a used LEGO piece is genuine by comparing molded markings, part numbers, catalog entries and known mold variants.

    Posted on The Brick Archivist