NY -- Standard&Poor's CreditWire 2/10/97 -- Standard&Poor's today has assigned its double-`A'-plus long-term issuer credit rating to Cedel Bank S.A. The outlook on the long-term rating is stable. At the same time, Cedel Bank's `A-1'-plus commercial paper and short-term issuer credit ratings are affirmed. The ratings reflect the institution's low-risk profile and its important role in the international financial system. Cedel is one of the global leaders in the clearing, settlement, and custody of internationally traded securities. Standard&Poor's believes that there are strong incentives for central banks and participants in the global securities markets to supply Cedel with liquidity support to avoid any disruption to the international financial system that would arise from a