(iv) The expression “vehicle in possession in the course of his business” has wide implication. “Therefore, once the vehicle is in possession in course of the business of a dealer under the authorization of trade certificate, at the end of twelve months, if it is ascertained that the dealer was in possession of vehicles in excess of the number indicated in the trade certificate for which no advance tax has been collected, in that case, the dealer is liable to pay the tax in consonance with the circular issued by the opposite parties. Needless to say that under a trade certificate, the dealer is obliged to retain the number of vehicles mentioned therein and not beyond that at a given point of time, but that ipso facto cannot disentitle him to pay tax in respect of the vehicles in his possession in course of business. In other words, if the dealer possesses vehicles in course of his business, he is liable to pay the tax in consonance with the circular issued by the authority concerned."