"Gerard Sendrey. Pair Of Drawing Pen Ball On Paper."
Gerard Sendrey. Pair of drawing, ballpoint pen on paper. Close to the effects of optical art, these drawings because of their incision in the material have effects that change in appearance. It can also be a lace job, the mark of the hand .... the photos presented were made by keeping the glass of the frame, which can explain a photo quality average, see some reflections. Signed on the back of the drawing. 
Le Magazine
Rivista Artiquariato
TRÉSORS magazine