You're here to make a deposit , is that correct ?   Right . I'd like to deposit 2,000 RIB into my Current Account .   No problem . Could I have the cash and your Bank Book , please ? Oh dear ... there seems to be some problems here ...   What ? What's wrong ?   I'm sorry but 5 of these notes seem to be counterfeit . Look at this watermark , do you see it ?   It does look a little strange , I didn't notice that before . 