Very Lovely Unsigned Siam AB Leaf Shaped Clip On Earrings from the 60s in Japanned or Blackened Metal

This is a pair of unsigned beauties from the 50s. They have Siam AB rhinestones in a leaf configuration. The metal has been blackened and this is called Japanning or Japanned. The earrings are 1 1/4x5/8" and are in excellent condition.