Even where a minimum penalty is prescribed, the authority has discretion to impose a lesser penalty depending on the facts and circumstances of the case. The amount mentioned in Rule 173Q(1) of the 1944 Rules or Rule 25(1) of the 2002 Rules is the maximum, and not the minimum. The amount shall not exceed the duty determined; if it is more than rupees five thousand, or rupees five thousand if the duty determined is less than rupees five thousand.