Section 74.00. Conversion and reconversion of notes

a. A note payable to
  bearer, if it so provides, shall be converted into a registered note  at
  the  request  of  the holder. The registration agent shall register such
  note in his books in the name of the holder and endorse a certificate of
  such registration upon the note. In like manner, at the written  request
  of  the  registered  holder  of  the  note  so  converted,  or his legal
  representatives, successors,  or  transferees,  the  registration  agent
  shall  reconvert  such note into a note payable to bearer by registering
  such note in his books as payable to bearer and endorsing a  certificate
  of  such  registration  upon  the  note.  Such  request  shall  be  duly
  acknowledged or proved, or in  the  alternative  the  signature  thereto
  shall  be  certified  as  to  its genuineness by an officer of a bank or
  trust company located and authorized to do business in this state.  Such
  note may again and from time to time be converted into a registered note
  and reconverted into a note payable to bearer in the manner provided  in
  this paragraph.
    b.  A  note  issued  in  registered  form, if it so provides, shall be
  converted into a note payable to bearer at the written  request  of  the
  registered   holder,   or  his  legal  representatives,  successors,  or
  transferees. Such request shall be duly acknowledged or  proved,  or  in
  the  alternative  the  signature  thereto  shall  be certified as to its
  genuineness by an officer  of  a  bank  or  trust  company  located  and
  authorized  to  do  business in this state. The registration agent shall
  register such note in his books as payable to bearer, and shall  endorse
  a certificate of such registration upon the note. In like manner, at the
  request  of  the  holder  of a note so converted, the registration agent
  shall reconvert such note into a registered  note  by  registering  such
  note  in his books in the name of the holder and endorsing a certificate
  of such registration upon the note. Such note may again and from time to
  time be converted into a note payable to bearer and reconverted  into  a
  registered note in the manner provided in this paragraph.