Production of bills of exchange and promissory notes
21.  Where a creditor seeks to prove in respect of a bill of exchange, promissory note or other negotiable instrument or security on which the company is liable, the bill of exchange, promissory note, instrument or security must, subject to any order of the Court made to the contrary, be produced to the liquidator and be marked by the liquidator before the proof may be admitted either for voting or for any purpose.