Model 3107 chair

The Model 3107 chair is a chair designed by Arne Jacobsen in 1955. It is a variation on the Ant Chair, also designed by Arne Jacobsen. Over 5 million units have been produced exclusively by Fritz Hansen.
Description.
The chair, along with the Jacobsen's Ant chair, was, according to Jacobsen, inspired by a chair made by the husband and wife design team of Charles and Ray Eames using their plywood bending techniques.
The chair is available with a number of different undercarriages — as a regular four-legged chair, an office chair with five wheels and as a bar stool. It can come equipped with armrests, a writing-table attachment, and different forms of upholstering.
The chair is widely believed to have been used in Lewis Morley's iconic photograph of Christine Keeler; however, the chair used in this photograph was an imitation and not an original Jacobsen model. The Keeler chair had a hand hold cut in the back. After the publishing of the pictures sales of the chair rose dramatically.