Property in the possession of a museum for which the museum does not know the owner or have any reasonable means of determining the owner becomes the property of the museum if no person has claimed the property within 7 years after the museum can document possession of the property. The museum becomes the owner of the property on the day after the 7-year period ends, free from all claims. This Section does not apply to stolen or confiscated property.
765 ILCS 1033/35