Final assessment cannot be reopened in refund proceedings to claim a different classification and exemption.

An unchallenged assessment order attaining finality cannot be reopened through refund proceedings to seek a different classification of imported goods. Where duty was paid without protest and no appeal was filed, the accepted classification remains binding, and a refund claim cannot operate as an indirect challenge to that assessment. As the exemption notification depended on an alternative classification inconsistent with the final assessment, the claim for exemption could not be examined in refund proceedings. The refund claim was therefore not maintainable to the extent it sought to disturb the concluded assessment and classification.

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Issues: Whether a refund claim can be used to dispute an unchallenged assessment and seek a different classification of imported goods, and consequentially claim exemption under a notification.

Analysis: The goods were assessed to duty at the time of import, duty was paid without protest, and no appeal was filed against the assessment order. In such circumstances, the classification accepted at assessment attained finality. A refund proceeding cannot be used to reopen or indirectly challenge an appealable assessment order that was not contested. The benefit of the exemption notification could not therefore be examined in the refund claim because the claimed classification itself was inconsistent with the final assessment.

Conclusion: The refund claim was not maintainable to the extent it sought to reopen the concluded assessment and classification, and the contention based on the notification failed.

Final Conclusion: The appeals failed because the assessee could not, in refund proceedings, question an unappealed assessment order or assert a different classification from the one finally assessed.

Ratio Decidendi: An appealable assessment order that is not challenged attains finality and cannot be reopened or indirectly disputed in refund proceedings by claiming a different classification or exemption.

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