The Selectmen may license suitable persons to be dealers or keepers of shops for the purchase, sale or barter of junk, old metals or secondhand articles in the town. They may also license suitable persons as junk collectors to carry, by purchase or otherwise, junk, old metals and secondhand articles from place to place in the town, and they may provide that such collectors shall display badges upon their persons or upon their vehicles, or upon both, when engaged in collecting, transferring or dealing in junk, old metals or secondhand articles; and may prescribe the design thereof and may make rules, regulations and restrictions, in addition and not inconsistent with those herein provided, relative to their business and may provide for the supervision thereof.

Every keeper of a shop for the purchase, sale or barter of junk, old metals or secondhand articles within the limits of the town shall keep a book in which shall be written, at the time of every purchase of any such articles, the description thereof and the name, age and residence of the person from whom and the day and hour when such purchase was made; such book shall at all times be open to the inspection of the Selectmen or any person by them authorized to make such inspection; and every keeper of such shop shall put, in a suitable and conspicuous place in his shop, a sign having his name and occupation legibly inscribed thereon in large letters; and such shop and all articles of merchandise therein may be at all times examined by the Selectmen or any person by them authorized to make such examination; and no keeper of such shop and no junk collector shall, directly or indirectly, either purchase or receive, by way of barter or exchange, any of the articles aforesaid of a minor, knowing or having reason to believe him to be such.