Finality of unit identity, Modvat credit and cum-duty valuation govern duty recomputation; penalty falls for bona fide dispute.

A final determination that two manufacturing divisions were one unit under exemption notifications cannot be reopened on the same facts, and the exemption benefit remains denied. Duty computation must still be recalculated by extending Modvat credit and treating the realised price as cum-duty price where those adjustments are legally available. A personal penalty is not sustainable in a bona fide interpretational dispute absent suppression or other penal conduct. The result is sustained denial of exemption, limited remand for recomputation of duty, and deletion of penalty.

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Issues: (i) whether the two manufacturing divisions were to be treated as one unit for the purpose of exemption under Notifications Nos. 6/2000-C.E. and 3/2001-C.E.; (ii) whether the duty demand required reworking by extending Modvat credit and treating the assessable value as cum-duty price; and (iii) whether personal penalty was sustainable.

Issue (i): whether the two manufacturing divisions were to be treated as one unit for the purpose of exemption under Notifications Nos. 6/2000-C.E. and 3/2001-C.E.

Analysis: The earlier order holding that a single registration was sufficient had attained finality and had been accepted by both sides. In the absence of any change in facts or premises, the appellants could not be permitted to take a contrary stand in later proceedings. The principle of finality and the general doctrine of res judicata barred reopening the same factual issue.

Conclusion: The two divisions were rightly treated as one unit, and the exemption benefit was correctly denied.

Issue (ii): whether the duty demand required reworking by extending Modvat credit and treating the assessable value as cum-duty price.

Analysis: The demand had been computed without giving effect to settled principles that, in a subsequent duty demand, Modvat credit available to the assessee must be considered and the realised price must be treated as cum-duty price. The matter therefore required factual recalculation on these limited aspects.

Conclusion: The duty computation was set aside to the limited extent of recalculation after allowing Modvat credit and cum-duty treatment.

Issue (iii): whether personal penalty was sustainable.

Analysis: The dispute turned on the interpretation and application of exemption notifications and was pursued with departmental knowledge. The record did not disclose suppression or conduct warranting penal consequences.

Conclusion: The penalty was set aside.

Final Conclusion: The exemption denial was sustained, the duty demand was remitted only for recomputation on the limited monetary adjustments, and the penalty was removed.

Ratio Decidendi: A factual determination on unit identity, once finally decided and unchanged on the same material, cannot be reopened in later proceedings between the same parties; duty demands must also be recomputed by allowing admissible Modvat credit and by treating the realised price as cum-duty, while bona fide interpretational disputes do not justify penalty.

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