This is a small pendant by Trifari, depicting a piano keyboard of black and white enamelled keys on a gold tone backing.
It comes with a 20cm long (approx 8 inch) vermeil (gold-plated Sterling silver) chain.
It was made by the American costume jewellery company Trifari. On the reverse it's signed Trifari, the style of which was introduced in the 1970s.
The mannequin dress form in the pictures is around size 10-12.
If you have any questions, just send an email to help@3bcshop.com.