balasubrahmanyan, J.

1. The petitioner in this case, by name Devendra Electricals, purchased certain goods from another registered dealer by name Honesty Electricals. Those goods were resold by the assessee. In respect of the sales turnover of those goods the assessee claimed exemption on the ground that they were second sales in the State. In the course of assessment the assessee produced before the assessing authority the invoices issued by the assessee's vendor, Honesty Electricals, and also the registration number of that concern. The assessing authority, however, turned down the claim of the assessee for exemption on the ground of the sales being second sales by reasons only of the fact that the assessee was not in a position to establish that its vendor had suffered tax in regard to the transactions under which the assessee purchased the concerned goods. When the matter was taken in appeal before the Tribunal the assessee cited the decision of this Court in Govindan & Co. v. State of Tamil Nadu [1975] 35 STC 50 and contended that when it was established by evidence that Honesty Electricals had sold the goods to the assessee it was not necessary for the assessee to furt