A final judgment heretofore or hereafter rendered in any civil or criminal proceeding brought by the State for violation of this act to the effect that a defendant has violated said act shall be prima facie evidence against such defendant in any proceeding brought by any other party against such defendant pursuant to section 12 of this act, as to all matters with respect to which said judgment or decree would be an estoppel as between the parties thereto; provided, that this section shall not apply to consent judgments or decrees entered before any testimony has been taken, or to judgments or decrees entered in actions brought under section 12 of this act.
N.J.S. § 56:9-13