In 1970 Ørskov exhibited pneumatic sculptures at New Smith Gallery in Brussels. From this exhibition no documentation has been found. Ørskov had previously participated in a group show the year before at the gallery and would also show in another group show there in 1971. The gallery at the time represented artists like Marcel Broodthaers, Piero Manzoni, and Jean Tinguely.

In 1971 the gallery produced a series of 12 lithographs for Ørskov, some of them depicted here. The series is clearly connected to the pneumatic works.