 OLDWICK, N.J.--BUSINESS WIRE-- insurance--AM Best has assigned a Long-Term Issue Credit Rating Long-Term IR of a- Excellent to The Hartford Financial Services Group, Inc.s The Hartford headquartered in Hartford, CT NYSE: HIG recently announced 600 million, 2.9 senior unsecured notes due September 2051. The outlook assigned to this Credit Rating rating is stable. The proceeds from the sale of the notes will be used to redeem the outstanding 600 million principal amount of the companys 7 