Section 90(6) in The Punjab Distillery Rules, 1932
(6)Upon the outside of both of the heads of every cask removed from the store room for deposit in the matured spirit warehouse must be legibly printed with oil colour the progressive number of the cask beginning with number one on the 1st January in each year, also the calendar year in which the deposit is made, and the full capacity to the nearest tenth of a litre.
