(1) A disposition over a thing made by a person without the authority to do so is effective if made with the consent of the person entitled.
(2) The disposition becomes effective if the person entitled ratifies it, or if the person disposing acquires the thing or if the person entitled has succeeded to the estate of the disposer and has unlimited liability for the obligations of the estate. In the last two cases, if more than one conflicting disposition has been made in respect of the thing, then only the earlier disposition is effective.