Rule 7 - Legal tender - Social Security Certificates Rules, 1982

Legal tender. 7. Payment for the purchase of a certificate may be made to a post office in any of the following modes, namely:- (i) cash; (ii) a cheque, pay order or demand draft; (iii) duly signed withdrawal form together with the pass book for withdrawal from the post office savings account; (iv) surrender of a matured old certificate duly discharged as follows: "Received payment through issue of fresh certificate vide application attached."