Vintage Hallmark Blue Cloisonne Gold tone OWL Figure Pin Brooch Enamel. Description: The pin features a stylized owl design with blue and white enamel (cloisonné) detailing set in a gold-tone metal. It includes a flower design on one wing. Brand: It is associated with the brand Hallmark. Material: The materials are mixed, typically metal and enamel.  If you have any questions feel free to ask.