"Under the Indian Coinage Act, coins other than a rupee coin and 50 Paise coin are only legal tender in payment of, or on account for, any sum not exceeding one Rupee; the public cannot, therefore, insist on post offices receiving such small coins for more than one rupee; Post Office officials will, however, endeavour to oblige the public as far as possible where this can be done without inconvenience"
Clause 88 of PO Guide Part-I
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