Sinnco Offshore Drilling - Converted The Wrought Iron Drills into Electric Table Lamps in a limited Edition in mid to late 70's . The Sinnco Logo is clearly imprinted on the base of wrought iron Jack. It's a self standing electric table lamp .It has an arm that is flexible n easy to adjust . It's a stable table lamp. Appraised at 825.00 asking 600.00 Obo.