This is a hard-to-find vintage store advertising sign/plaque for Pierre Cardin. It is double sided and likely dates to the 1970s/1980s and was probably used in a department store to display Pierre Cardin jewelry or sunglasses.
It is made of a very study black plastic and measures approx. 15 inches wide and 6 inches high. It is in overall good vintage condition with light scratches/scuffs throughout. I have not cleaned it. Please note: It is very hard to photograph without reflections. A fun piece of fashion history!