(a) If the veteran fails to redeem his certificate before its maturity there will be deducted from the face value of the certificate the amount of the unpaid principal of the note of the veteran and the unpaid interest thereon through September 30, 1931.

(b) If the veteran failed to redeem his certificate and died prior to January 27, 1936, there will be deducted from the face value of the certificate the amount of the unpaid principal of the veteran's note and the unpaid interest thereon to the date of his death. If the veteran died on or after January 27, 1936, the amount to be deducted when making settlement will be the unpaid principal of the veteran's note and the unpaid interest thereon through September 30, 1931.