to be introduced in evidence. Exts.A4 to A14 were photocopies of the documents (not properly authenticated) for the period from 19841985 to 1992-93. The trial court refused to admit Exts.A4 to A14 in evidence since the same were photocopies and the sufficient foundation for admission of secondary evidence was not laid by the appellant. It also came out that Exts.A4 to A14 were produced in the trial court on the previous day of examination of PW1 on 20/11/1996. What remained is only Exts.A15 and A16, invoices dated 25/07/1991 and 26/09/1991 respectively, for delivery of goods for Rs.3,625/- and Rs.5,134/-, respectively. Those documents revealed payment of the said amount in cash. The courts below observed that Pws. 1 and 2 could not give proper evidence regarding the transactions. Ext.B1 is a letter sent by the appellant which revealed difference in the accounts maintained by the appellant. Apart from that, PW2 stated that the credit notes mentioned in Ext.B1 were not accounted. It is in the above circumstances that the trial court dismissed the suit and decreed the counter claim. The first appellate court while considering the decree on the counter claim held that the amount due to the respondent is Rs.9,888/- and accordingly modified the decree on the counter claim.