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davidcyclebackDuly note that in the State of California, the seller of an item like this is required to include paper document guaranteeing the authenticity and stating any known alterations or restorations. The new owner has a period of time to return the item if the statements proves not to be true, and the original seller could be fined if it is shown he or she broke this law.
This law was written in response to fine art fraud and forgery, but also explicitly applies to the sales of collectibles worth a minimum of a certain amount.