Art Nouveau Iridescent? Opalescent Glass Brass Table Lamp/Desk/Piano 27

This estate sale find is a iridescent opalescent brass lamp. The glass is beautiful and reflects the light nicely. The total weight is approximately 4.5 pounds. The approximate height is 27 inches, and the base is approximately 7.5 inches across. It does not include the light bulb that is in the pictures.

God Bless and have a wonderful day!