law: Code of Criminal Procedure Act, 1973
  
  292.Evidence of the officers of the Mint.-
  (1) Any document purporting to be a report
  
  under the hand of any such gazetted officer of the Mint or of the India
  
  Security Press (including the office of the Controller of Stamps and
  
  Stationery) as the Central Government may, by notification, specify in this
  
  behalf, upon any matter or thing duly submitted to him for examination and
  
  report in the course of any proceeding under this Code, may be used as evidence
  
  in any inquiry, trial or other proceeding under this Code, although such
  
  officer is not called as a witness.
  (2) The Court may, if it thinks fit, summon and examine any such officer as to
  
  the subject-matter of his report:
  
  Provided that no such officer shall be summoned to produce any records
  
  on which the report is based.
  (3) Without prejudice to the provisions of sections 123 and 124 of the Indian
  
  Evidence Act, 1872, (1 of 1872) no such officer shall, except with the
  
  permission of the Master of the Mint or the India Security Press or the
  
  Controller of Stamps and Stationery, as the case may be, be permitted -
  (a) to give any evidence derived from any unpublished official records on which
  
  the report is based; or
  (b) to disclose the nature or particulars of any test applied by him in the
  
  course of the examination of the matter or thing.