0000950124-97-006486 424B5 1 19971217 CSE NYSE ALLSTATE CORP 0000899051 6331 363871531 DE 1231 424B5 33 333-10857 97740064 2775 SANDERS ROAD NORTHBROOK IL 60062 7084026075 2775 SANDERS ROAD NORTHBROOK IL 60062 424B5 1 000095012497006486-001-seq1-424b5.txt PROSPECTUS SUPPLEMENT