Has format

This is a property of type String.

Ephemera
Engraving
Manuscript
Photograph
Printed material
Tune

Constraint schema

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{
    "type": "PROPERTY_CONSTRAINT_SCHEMA",
    "constraints": {
        "type_constraint": "_txt",
        "allowed_values": [
            "Book",
            "Collection",
            "Engraving",
            "Ephemera",
            "Manuscript",
            "Photograph",
            "Tune Book",
            "XML",
            "ABC",
            "LY",
            "MSCZ"
        ]
    }
}