If the agent transacts business in the name of the principal, he must state that fact; and if the contract is in writing, he must state it therein or in the subscribing clause, giving the name, surname, and domicile of said principal.\nIn the case prescribed in the foregoing article, the contract and the actions arising therefrom shall be effective between the principal and the person or persons who may have transacted business with the agent; but the latter shall be liable to the persons with whom he transacted business so long as he does not prove the commission, if the principal should deny it, without prejudice to the obligation and proper actions between the principal and agent.\nHistory —Commerce Code, 1932, § 165.
Puerto Rico Legal Code