NEW YORK (Standard & Poor's) Dec. 13, 2002--Standard & Poor's Ratings Services said today that it assigned its 'A+' senior debt rating to The Allstate Corp.'s (Allstate) $250 million, 30-year notes issuance, which was sold at a 6.125% coupon rate. "Allstate intends to use the net proceeds from this offering to fund the redemption of $250 million of 7.125% senior quarterly interest bonds (QUIBS) that it issued in 1997," said Standard & Poor's credit analyst Matthew Coyle. The maturity date was 2097. The principal plus accrued and unpaid interest to the date of redemption will be paid on Dec. 19, 2002. On that date, Standard & Poor's will withdraw the QUIBS rating. The company expects to finance this redemption through