Signature Bank, N.A. Back to Search Signature Bank, N.A. Categories Banks & Credit Unions 4607 W. Sylvania Ave. , Toledo , OH , 43623 49 S Monroe Street , Monroe , MI , 48161 (419) 841-7773 Send Email http://www.signaturebankna.com/ About Share × Print Email Facebook LinkedIn Twitter Pinterest Powered By GrowthZone