S. Delaunay: Composition discs and circles, stencil

A note on the back of this piece, the number «9». (The other three: 12.13.18). Attributed to
Sonia Delaunay rather than Robert, not only by the merchant (who took this round of funding from collector George Pillement, Art Historian & Critic), but by the fact that it is a stencil. Done well known
Additional four parts of this series (9.12.13. 18), Although not signed in the manner of Sonia Delaunay, bear the monogram S. D, lower left, pencil and paper, not supported, or at the lead mine, in a place intended to be covered by the pigment, and therefore sensible disappear. It transpires, however, under the orange-vermilion of No. 18, So not here. This practice is not common but not rare, however, since the invention of radiography at painters fearing imitators. The colors applied
Seem to be made in a very fluid gouache allowing mergers tone overlap volunteers, poncifs connections (the number of disks or circles appearing in shades, is then increased, making this series feature of Orphic Cubism Sonia Delaunay).
Support: stiff paper (card stock type? ) Cream clear. State: very good but incomplete. Two small patches of vermilion on the big green circle. A surface tear on the blue left down.
Overleaf: annotations collector and attribution in pencil. Three stamps collectors.