Excise exemption for specified jewellery and government-manufactured goods applies only where statutory manufacture and intended-use conditions are met. Notification sets excise duty at a Nil rate for articles of jewellery under Heading 7113 without conditions, and sets a Nil rate for goods under Heading 8607 only when manufactured by a Central Government factory and intended for use by any Central Government department; the notification was later rescinded by a subsequent notification.