Help Identify these earrings

[John Smith]

I need help Identify these earrings. They are end of 1800 or early 1900 with screw and button fake pearl.
The marking is probably of Russian letters and woman profile and 875, but color is like gold.

https://dl.dropbox.com/u/17411476/IMAG0420.jpg" onclick="window.open(this.href);return false;
https://dl.dropbox.com/u/17411476/IMAG0419.jpg" onclick="window.open(this.href);return false;