(1) WE restrict ourselves, in deciding this appeal, to the question of limitation. On 16th April, 1987, a show cause notice was issued to the appellants. It covered a larger period but was made absolute for the period 16th April, 1982 to 31st January, 1985. The show cause notice alleged that the appellants had suppressed the fact that they were entitled to collect charges for maintenance services of the computers they sold during the warranty period thereof. It is an admitted fact that the contracts for the sales of the computers had been disclosed by the appellants. These contracts showed the entitlement of the appellants to collect charges for maintenance during the warranty period. An application of mind by the Excise authorities concerned would have revealed to them that the appellants were entitled to collect such charges. There was no suppression in this behalf by the appellants. The Excise authorities were, therefore, not entitled to invoke the larger period of limitation under Section 11-A of the Central Excise Act to issue the show cause notice. The demand made by the show cause notice was beyond time and, accordingly, the order of the Tribunal confirming the deman