In addition to the salary allowed by law to the said receiver of taxes, he shall be entitled to a commission of the per cent. on all moneys so collected by him or his deputies, and paid over to the treasurer of any city of the first class, for which commission a warrant shall be drawn on said treasurer by said receiver monthly, and countersigned by the controller of any such city upon the production of a certificate of the treasurer of said city that the amount of delinquent taxes, for which the commission is charged, has been paid into the city treasury. The receiver of taxes shall receive no other compensation in addition to his salary, than that herein provided.
53 P.S. § 15995