Finality of appellate classification bars departmental refusal of refund where facts, process, and tariff remain unchanged.

An unchallenged appellate classification order attaining finality binds the department unless there is a material change in facts, the manufacturing process, the tariff entry, or the relevant legal position. On the same product and unchanged legal framework, the departmental authority could not reopen classification or refuse refund by treating the earlier appellate order as limited to an earlier period. The earlier finding that waterproof drawing ink was non-excisable therefore continued to govern, and the refusal to grant refund was inconsistent with that binding classification. The impugned order was quashed and the refund claim was allowed.

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Issues: Whether waterproof drawing ink was correctly classifiable under Tariff Item 14-I(5) and whether, in the absence of any change in facts or tariff, the departmental authority could refuse refund contrary to the earlier appellate classification order.

Analysis: The earlier appellate order had concluded that the product was non-excisable and that conclusion had not been challenged in revision, thereby attaining finality. No change in the composition of the product, manufacturing process, tariff entry, or legislative policy was shown. In such circumstances, the departmental authority could not sit in appeal over the appellate order or disregard it merely by limiting it to an earlier period. The later departmental refusal to grant refund was therefore inconsistent with the binding earlier classification, especially when the same product and legal position continued unchanged.

Conclusion: The classification adopted by the department was not sustainable and the assessee was entitled to refund of the duty paid on waterproof drawing ink.

Final Conclusion: The impugned order was quashed and the refund claim was allowed, with a direction to refund the duty amount to the assessee.

Ratio Decidendi: An unchallenged appellate classification order attains finality and cannot be disregarded by a departmental authority in the absence of any change in facts, manufacturing process, or the relevant tariff entry.

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