This is from a range of brooches produced during the 1960's with the CA signature. Nothing is known about this company other than the era and there is a possibility they were produced in France where a number of them are found. There is the head of a very vintage lady set in to a lucite frame. Overall dimension is 5.5cms x 4.5cms. There is a strong roll in pin to the back rivetted in.  Condition is excellent with a little wear spot to the back.  Gift boxed by Vintageonline.