(1) If the testator has specified the thing bequeathed only by class, a thing commensurate with the circumstances of the person provided for is to be given.
(2) If the person provided for or a third party is entrusted with the specification of the thing, the provisions set out in section 2154, governing the third party’s choice, apply.
(3) If the specification made by the person provided for or the third person is evidently not commensurate with the circumstances of the person provided for, the person charged has to execute the legacy as if the testator had not given any directions concerning the specification of the thing.