Signed Navajo Turquoise Feather Necklace

Signed Navajo turquoise feather necklace that has one round turquoise stone attached to a leaf applique' done in sterling silver, with a 18"' chain . Necklace has the Sterling hallmark on the back and the initials ES . The top of the pendant to the bottom of the feathers measures approximately 2 1/4 " long. In wonderful condition but the sterling could use a little polishing