The value of a cameo is determined on how intricately well the carving is. There is alot of detail and precision to this particular one. Very Victorian in style and set in rolled gold, with the stamping AD.
Rolled gold is a very thin sheet of gold that is laminated to a lesser metal (usually brass). The two layers of metal are heated under pressure to fuse them together. The sheet is then rolled into a very thin sheet and then used to make jewelry or other objects.
Jewelry made from rolled gold wear well over time. This technique was popular before jewelers started to set the cameos in White Gold, which dates this piece to be approx. around 1900.
It measures approx. 1 1/4" long and a little under 1" wide.
It is in very good vintage condition, no cracks to the cameo and the pin is nice and straight.
Have any questions? Contact the shop owner.