Stolen Cultural Objects
Article 4

(1) The possessor of a stolen cultural object required to return it shall be entitled, at the time of its restitution, to payment of fair and reasonable compensation provided that the possessor neither knew nor ought reasonably to have known that the object was stolen and can prove that it exercised due diligence when acquiring the object.

(3) Payment of compensation to the possessor by the claimant, when this is required, shall be without prejudice to the right of the claimant to recover it from any other person.

Illegally Exported Cultural Objects
Article 6

(1) The possessor of a cultural object who acquired the object after it was illegally exported shall be entitled, at the time of its return, to payment by the requesting State of fair and reasonable compensation, provided that the possessor neither knew nor ought reasonably to have known at the time of acquisition that the object had been illegally exported.

(3) Instead of compensation, and in agreement with the requesting State, the possessor required to return the cultural object to that State, may decide:
(a) to retain ownership of the object; or
(b) to transfer ownership against payment or gratuitously to a person of its choice residing in the requesting State who provides the necessary guarantees.