Antique Black Enamel Brass Paper Clip WACO ELECTRICAL SUPPLY CO., TEXAS. Clip measures 2 1/2" tall x 2 1/2" wide. Clip reads: "WACO ELECTRICAL SUPPLY CO. EVERYTHING ELECTRICAL 616 AUSTIN AVE. WACO, TEXAS." Back bottom is stamped: "THE GREENDUCK CO. CHICAGO". Black background with overall nice patina. No damages or repairs. Shows slight wear due to age.