Section 28-408.5. Surrender of license, plate or seal

Upon the death or the
  retirement  of  a  licensed  master  plumber,  or  upon  the  surrender,
  revocation  or  suspension  of  his  or her license, his or her license,
  plate and/or seal shall immediately be surrendered to the  commissioner.
  Nothing  contained  herein  shall  be  construed  to  prevent  the legal
  representative  of  a  deceased  licensee,  with  the  consent  of   the
  commissioner,  from  retaining  such  plate  and seal for the purpose of
  completing all unfinished work of the deceased licensee for which  plans
  have  been approved and a permit issued, provided such work is performed
  by or under the direct and continuing supervision of a  licensed  master
  plumber  and  is completed within one year from the date of the death of
  the original licensee.