This is a vintage pair of sterling silver earrings shaped like swans (or possibly ducks).  The earrings are marked "Sterling Silver" on the back.  There may be a maker's mark but if so, its illegible to me.  The earrings are screw back clip on style for non-pierced ears.  These earrings were given to me somewhere between the mid 1970s to early 1980s and were rarely worn.  They are in good shape, screws turn freely.  The earrings need to be cleaned with silver cleaner.  They fit close to the ear and are about .8" wide.