PH 80 table lamp

The lamp's model number PH 80 does not refer to the diameter of the upper shade, as is usually the case with 3-shade system models. The lamp was created in 1974 after PH had already died to mark the 80th anniversary of his birth - hence the name PH 80. 

It is a rare table lamp model. More information about the corresponding PH 80 floor lamp, which is still on sale, can be found on Louis Poulsen's website: https://www.louispoulsen.