Natural justice requires a show cause notice before revising classification and rejecting a refund claim.

An authority that proposes to revise a goods classification from Chapter 85 to Chapter 74 and reject a refund claim on that basis must first issue a proper show cause notice. A mere letter seeking explanations does not satisfy natural justice where the earlier classification is being altered to the importer's detriment. The procedural defect renders the adverse refund decision unsustainable, and the appellate relief to the importer is maintained while the classification merits remain undisturbed.

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Issues: Whether the revision of classification and rejection of the refund claim without issuing a show cause notice violated the principles of natural justice.

Analysis: The goods had initially been classified under Chapter 85, but when the refund claim was filed the Assistant Commissioner revisited the classification and placed the goods under Chapter 74. The order records that only a letter seeking reasons was issued and no show cause notice was served before taking a decision adverse to the importer. Mere correspondence seeking explanation did not amount to compliance with natural justice when the authority intended to alter the earlier classification and decide the refund claim on that basis.

Conclusion: The absence of a show cause notice amounted to a violation of the principles of natural justice, so the orders in appeal were held to be legal and proper and the Revenue's appeals failed.

Final Conclusion: The decision sustains the appellate relief granted to the importer on procedural grounds and leaves the merits of classification undisturbed.

Ratio Decidendi: Where an authority proposes to alter an earlier classification and deny refund on that basis, a mere letter seeking explanations is insufficient and a prior show cause notice is required to satisfy natural justice.

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