This is a vintage 'serigraphy' brooch, from the 1960s/70s and they are almost always unsigned. This one is unsigned but has the distinctive shape of the roll-over pin. It has a pretty pink marbled frame, much nicer in person as it's iridescent with a dusty purple stripe mixed with the pinks. The picture is a micro-mosaic mother-of-pearl effect with the drawing superimposed. The picture is loosely trapped within the frame. The condition of both the picture and the frame is very good, with just minimal signs of use, very light scratching to the back. 5.7cm.