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Expertization is the process of authentication of an object, usually of a sort that is collected, by an individual authority or a committee of authorities. The expert, or expert committee, examines the collectible and issues a certificate typically including:
- A statement of:
- Whether or not the item is authentic
- Identification of any damage to the item
- Identification of any repairs to the item
- Identification of any forgery or faked parts of the item
- A photo of the item
Some experts apply a mark or signature to the item attesting its genuineness.
Expertization is particularly common with valuable philatelic items, some of which are so often forged that they may be unsaleable without it.
