Vintage Siam Silver and Enamel Clip Earrings

Pair of vintage Siam Sterling silver and enamel clip earrings. They feature Siamese dancers on a fan. The earrings are stamped 'Siam Sterling' on the back of the fan. (Siam is now Thailand.) Because of the vintage nature, there are some signs of age and they could use a good cleaning. One fan has a slight crack in the enamel (see photos), which is hardly noticeable when worn.