Section 231. Application of quality mark

1. When an article is composed of
  mechanism,  works  or  movements  and  of a case or cover containing the
  mechanism, works or movements, a quality mark  applied  to  the  article
  shall  be  deemed  not  to  be, nor to be intended to be, applied to the
  mechanism, works or movements.
    2. The quality mark applied to the article  shall  be  deemed  not  to
  apply  to  springs, winding bars, sleeves, crown cores, mechanical joint
  pins, screws, rivets,  dustbands,  detachable  movement  rims,  hat  pin
  stems,  bracelet  and  necklace  snap tongues. In addition, in the event
  that an article is marked under the  last  paragraph  of  the  preceding
  section,  the quality mark applied to the article shall be deemed not to
  apply to pin tongues, joints, catches, lapel button backs and the  posts
  to  which they are attached, scarf pin stems, hat pin sockets, shirtstud
  backs, vest button backs and ear screw backs, provided  such  parts  are
  made  of  the  same  quality  of  gold as is used in the balance of this
  article.