Old Mother sweetheart pin on mother of pearl leaf

This vintage pin Twisted gold "Mother" pin is from the 1920's. Typically made during WWI & WWII and often called "Sweetheart Pins". This pin appears to be from WWI. The base is made from a real mother of pearl shell, which is hand carved. The gold tone metal is twisted to form the lettering, and the pin back, and appears to be gold, but not marked so. The iridescent rainbow of colors in the mother of pearl shell are still in excellent condition!