800 Silver Gilt Antique or Vintage Filigree Enamel Butterfly Brooch Blue Green

This is a very detailed fascinating piece. It is marked 800 on the back of the clasp but difficult to see because of tarnishing. Vivid colors like lime and bright blue and gold.. This is likely antique and at least vintage. It is in good condition with tarnishing of silver on back and some wear on the back of item. It is delicate yet strong too. I am tempted to clean it but feel it best to sell as it is in its aged patina state, beautiful in its own right and leave it to new owner to decide how best to proceed. smoke free