Product code: Postmodern Memphis Era Table/Desk Lamp ||Robert Sonneman top accredited
Although I can't confirm it's authenticity that's it's indeed a Robert Sonneman lamp, bellow is a description the authentic lamp.
1987' Designed by Robert Sonneman for George Kovacs table desk lamp, with dimmer. Materials are brass poles top, metal and a glass diffuser.
Simply a beautiful piece.
*sorry, no refunds, returns or exchanges.