Approved generic classification lists cannot justify extended limitation for differential duty without proof of deliberate suppression.

Approved classification lists using generic descriptions, left undisturbed over time, do not by themselves justify invoking the extended period for differential excise duty. The Department was expected to make proper enquiry at the approval stage and, where necessary, use provisional assessment; once it had accepted the descriptions for years, deliberate misdeclaration could not be inferred merely because the goods might fall under different headings. In the absence of specific evidence of intent to evade duty or deliberate suppression, the demand based on extended limitation failed and the proposed differential duty and penalty could not be sustained.

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Issues: Whether the demand of differential duty could be sustained by invoking the extended period on the ground of misdeclaration in the classification lists, and whether the Department's failure to act on the approved generic descriptions and to establish deliberate suppression disentitled it to confirmation of demand.

Analysis: The classification lists described the goods in generic terms and were approved by the proper officer over a long period. Under Rule 173B(2) of the Central Excise Rules, 1944, the proper officer was expected to make due enquiry before approving the classification and could have resorted to provisional assessment under Rule 9B of the Central Excise Rules, 1944 if the correct classification required verification. Having accepted the descriptions for years, the Department could not later infer a deliberate misdeclaration merely because the goods were capable of falling under different headings. The record did not show specific evidence of intent to evade duty. The earlier show cause notices and the delay in acting after the test results further supported the view that the extended period was not available.

Conclusion: The plea of misdeclaration and invocation of the extended period failed, and the demand of differential duty was not sustainable.

Final Conclusion: The appeal succeeded because the demand and penalty could not be upheld on the facts and the Department had not established deliberate suppression or a valid basis for extended limitation.

Ratio Decidendi: Where classification lists using generic descriptions have been approved by the proper officer over time without due enquiry or provisional assessment, the Department cannot invoke the extended period for differential duty absent specific evidence of deliberate misdeclaration or intent to evade duty.

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