Section 6203. Attaching creditor's rights in personal property

Where a
  plaintiff has delivered  an  order  of  attachment  to  a  sheriff,  the
  plaintiff's  rights in a debt owed to the defendant or in an interest of
  the defendant in personal property against  which  debt  or  property  a
  judgment  may  be  enforced, are superior to the extent of the amount of
  the attachment to the rights of any transferee of the debt or  property,
  except:
    1. a transferee who acquired the debt or property before it was levied
  upon  for  fair  consideration  or  without  knowledge  of  the order of
  attachment; or
    2.  a  transferee  who  acquired  the  debt  or  property   for   fair
  consideration  after  it  was  levied upon without knowledge of the levy
  while it was not in the possession of the sheriff.