Banks in  Luxembourg - Grand Duchy Luxembourg Bank Directory American Express Financial Services (Luxembourg) S.A. Address: 74, Mühlenweg, L-2155 Luxembourg  Postal address: BP 1321, L-1013 Luxembourg  Telephone: 47 17 54 1  Fax: 47 24 19  Swift code: AEIB LU LX  Date of establishment: June 2005    Web www.wtonetwork.com