Modvat credit limitation runs from the date of taking credit, and defective appeal verification can defeat maintainability.

An appeal is vulnerable where the record does not show annexed grounds of appeal authorised by the Commissioner and the appeal memo lacks the prescribed verification, because these defects go to maintainability and the objection will be accepted. For limitation under Rule 57-I, the relevant date is the date on which Modvat credit is taken, not the date of utilisation or return filing. A show cause notice issued beyond six months from the taking of credit is therefore time-barred, and the demand for reversal of credit fails on limitation.

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Issues: (i) Whether the Revenue appeal was maintainable in the absence of annexed grounds and prescribed verification. (ii) Whether the show cause notice demanding reversal of Modvat credit was barred by limitation under Rule 57-I.

Issue (i): Whether the Revenue appeal was maintainable in the absence of annexed grounds and prescribed verification.

Analysis: The record did not show that the Commissioner had annexed any grounds of appeal while authorising the filing of the appeal, and the appeal memo also did not contain the verification required by the prescribed format. These defects went to the validity of the appeal.

Conclusion: The objection to maintainability was accepted.

Issue (ii): Whether the show cause notice demanding reversal of Modvat credit was barred by limitation under Rule 57-I.

Analysis: For limitation under Rule 57-I, the relevant date is the date of taking credit and not the date of utilisation of credit or the date of filing of the return. Since the credit in question was taken between 1-2-1993 and 10-2-1993, a show cause notice dated 10-8-1993 was beyond the six-month period.

Conclusion: The demand was time-barred.

Final Conclusion: The Revenue appeal failed and the order in favour of the respondent-assessee was upheld on the preliminary objection as well as on limitation.

Ratio Decidendi: For Rule 57-I, limitation runs from the date of taking Modvat credit, and an appeal lacking the required authorisation grounds and prescribed verification is liable to fail.

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