LONDON (Standard&Poor's CreditWire) Sept. 9, 1999--Standard&Poor's today lowered its long-term counterparty credit, certificate of deposit, and senior unsecured debt ratings on De Nationale Investeringsbank N.V. (NIB) to double-'A'-minus from double-'A'-plus. Standard&Poor's also lowered its subordinated debt ratings on NIB to single-'A'-plus from double-'A'. The ratings were also removed from CreditWatch, where they were placed on Dec. 24, 1998, with negative implications. At the same time, Standard&Poor's affirmed its 'A-1'-plus short-term counterparty credit, certificate of deposit, and short-term debt ratings on NIB, and removed these ratings from CreditWatch, where they were placed on Jan. 13, 1999, with negative implications. The outlook is stable. The ratings on NIB were placed on CreditWatch following the