"Rotor"
Signed with monogram. Executed 1955. Gouache 9.5 x 13 cm.
Gallerie Bel'Art, Stockholm.
The painting is a version of several paintings of the with the same theme, one of which is in Gerhard Bonnier's collection, one in Gothenburg Art Museum, one entitled "D5" sold at Bukowski's Modern Auction 2015, Stockholm 584, cat no. 74 and two others in private collections in Stockholm.