The Selectmen may license suitable persons as junk collectors,
to collect, 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, transporting or
dealing in junk, old metals or secondhand articles; and may prescribe
the design thereof. They may also provide that any vehicle or receptacle
used for the collection or keeping of the articles aforesaid may be
examined at all times by the Selectmen, or by any person by them authorized
thereto.