(1) The Stationery Office shall assign to each statutory instrument to which this Act primarily applies and may assign to any other statutory instrument printed and published by the Stationery Office a number as of the year in which it is made, and, where any such number is so assigned to a statutory instrument, there shall be printed conspicuously on the face thereof, -

(a) if it is drawn up in the Irish language, the following inscription, namely, "I.R. Uimh. (the said number) de (the said year).", or

(b) if it is drawn up in the English language, the following inscription, namely, "S.I. No. (the said number) of (the said year).".

(2) Non-compliance with subsection (1) of this section shall not affect the validity or the coming into force of any statutory instrument.