The police commissioner of Boston, the license commission of Lowell, the aldermen of any other city, or the selectmen of any town, if ordinances or by-laws therefor have been adopted in such city or town, may license suitable persons to carry on the business of pawnbrokers in such city or town, subject to sections two hundred and two to two hundred and five, inclusive, and may revoke such licenses at pleasure.
Mass. Gen. Laws ch. 140, § 70