The pendant lamp comes with 4 x e27 / e26 edison screw fit bulb holders, is wired and in working condition. It runs both on 110/230 volt. I have official proof of authenticity such as vintage catalogs, designer records, or other literature sources and take full responsibility for any authenticity issues arising from misattribution, up to 250v (europe/uk standard).the wiring of this item may be original and might need replacement, if not specified otherwise.