1970s Primary Colors Enamel on Metal Modernist 4 Sided Handcrafted Pin Brooch

Eye-catching large blue, yellow & red enamel on metal modernist 4-sided shape brooch circa 1970's. Unsigned, it measures 1-1/2 inches to 4 inches wide by 4-3/4 inches tall. Although pre-owned, the brooch is in excellent condition with small scratches, No nicks chips cracks in the enamel. The gold plated pin & clasp are secure. Consider the pictures to be part of the description. Don’t hesitate to ask any questions.