"Upon a careful consideration of the issue we find that the assessee in this case is claiming that out of the total purchases of shares made during the year, more than 50% thereof (Rs.12.92 crores in value) be allowed as loss of shares on physical verification as at the close of the year. Reference to diminution in the value of shares is a misleading nomenclature as rightly pointed out by the authorities below. In such a situation, we agree with the learned Departmental Representative that on these facts, the method of accounting and stock taking by the assessee cannot at all be relied upon and the resultant claim of loss is not justified. The learned Commissioner of Income Tax (Appeals) has passed an elaborate and well reasoned order. He has rightly held that on the facts of the case, the books of the assessee are liable to be rejected. The learned counsel of the assessee's contention that no fault has been found in the manner of physical verification is devoid of cogency as the system of accounting and book keeping by which more than 50% of the purchases became tracelss is not at all reliable in totality from any point of view. The assessee has vehemently contended that assessee's accounts are regularly and properly audited. In that case, the aspect that some loss of stock of shares might have happened in earlier years but detected during the current year does not come to the fore. Moreover, loss if any, pertaining to earlier period cannot be allowed and claimed in the current assessment year. Again, no case has been made out that there was theft etc. of the shares as no submission in this regard has been made. Moreover, in the absence of any complaint in this regard with concerned authorities, this aspect does not emerge for adjudication. The learned counsel of the assessee's reliance upon case laws regarding valuation of stock is not relevant here as there is no dispute that consistently followed method of stock valuation should be adopted and lower of cost or market value should normally be adopted. But, if the system gives unexplained loss of more than 50% of the purchases, such a system cannot be relied upon. In the context of aforesaid discussion, we do not find any infirmity