For sale is a fun little gilded sterling bird and nest pin with pearl eggs, signed FM.  The pin is just 1/4 inches long by 1 inch tall and weighs 6 grams.  The piece is gilded, and the bird has a blue gemstone eye, in addition to the pearl eggs.  It has a standard pin back with a safety catch.  It is marked “© FM 83 / STERLING 925” in a rectangle as shown.

Condition on the pin is good.  There is just light wear and a bit of polish in the designs.  A fine pin!