Tariff classification and rate of duty disputes lie under Supreme Court route, while rectification is limited to six months.

A dispute that is essentially about tariff classification and the resulting rate of duty falls outside the High Court's appellate jurisdiction under Section 35G of the Central Excise Act, 1944 and must proceed under Section 35L to the Supreme Court. The controversy over whether the goods attracted duty at one rate or another was therefore not maintainable before the High Court, and the appeal was dismissed. Rectification under Section 35C(2) is confined to the statutory six-month period; the Tribunal cannot enlarge that time. The rejection of the Revenue's rectification application as time-barred was accordingly upheld.

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Issues: (i) Whether an appeal under Section 35G of the Central Excise Act, 1944 is maintainable where the controversy is essentially about rate of duty and tariff classification, and therefore falls within the appellate route to the Supreme Court under Section 35L of that Act; (ii) Whether an application for rectification of mistake under Section 35C(2) of the Central Excise Act, 1944 can be entertained beyond the statutory period of six months.

Issue (i): Whether an appeal under Section 35G of the Central Excise Act, 1944 is maintainable where the controversy is essentially about rate of duty and tariff classification, and therefore falls within the appellate route to the Supreme Court under Section 35L of that Act.

Analysis: The dispute as framed by the Revenue concerned the proper tariff classification of the spares and the resulting rate of duty, including whether the goods attracted duty at 8% or 16%. Such a controversy is one relating to rate of duty and classification. The statutory scheme excludes such questions from the High Court's appellate jurisdiction under Section 35G and places them within the jurisdiction of the Supreme Court under Section 35L. The attempt to describe the grievance as merely seeking a finding from the Tribunal did not alter the real nature of the controversy.

Conclusion: The appeal was not maintainable before the High Court and was dismissed on this issue in favour of the Assessee.

Issue (ii): Whether an application for rectification of mistake under Section 35C(2) of the Central Excise Act, 1944 can be entertained beyond the statutory period of six months.

Analysis: Section 35C(2) expressly permits rectification only within six months from the date of the order. The Tribunal's refusal to entertain the Revenue's rectification application as time-barred was consistent with the statutory limitation. The Court held that the provision did not permit enlargement of time and that the application was correctly rejected on limitation grounds.

Conclusion: The rejection of the rectification application as barred by limitation was upheld in favour of the Assessee.

Final Conclusion: The Revenue's appeals failed, as the main challenge lay on a classification and rate-of-duty question outside the High Court's appellate jurisdiction, and the rectification application was also barred by the statutory limitation.

Ratio Decidendi: A dispute that is essentially one of tariff classification and rate of duty lies outside Section 35G and must follow the route under Section 35L, and rectification under Section 35C(2) cannot be pursued beyond the fixed six-month statutory period.

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