Section 8(2) in The M.P. Electricity (Supply) Finance Rules, 1967
(2)The Board may issue such class or classes of stock as it may, determine, but each class of stock shall have a distinctive title and shall be issued subject to the condition that all stock at any time belonging to that class shall bear one and the same rate of interest, shall become redeemable at the same time and shall in all other respects be of the same character.
