Danish Sterling silver Blue brooch with enamel butterfly

Volmer Bahner & Co sterling silver, brooch with blue enamel butterfly. Stamped "BAHNER 925S". Volmer Bahner and Co. were silversmiths in Copenhagen from 1962 to 1987. Measures 3.5 x 2.5 cm. There is surface wear in the enamel on the lower right corner, see photo, otherwise fine and well-maintained condition.