7. Every χαρτόσημο denoting a fee of Court shall be cancelled by an officer of the Court at the time when the document to which such χαρτόσημο is affixed is received by him or, if no document bearing a χαρτόσημο be required to be presented to an officer of the Court, then at the time when the χαρτόσημο denoting the fee of Court is affixed by such officer.