Excise duty amendment imposes an ad valorem rate on goods classified under a specific sub-heading. The amendment inserts Sl. No. 11A into the Table to Notification No. 69/90-Central Excises to add sub-heading 8451.00, covering all goods under that sub-heading and prescribing a 10% ad valorem rate, effected under the powers conferred by sub-section (1) of section 5A of the Central Excises and Salt Act, 1944.