This estate pin is sterling silver of hammered construction (it was formed by shaping it over a mold; this is why is looks hollow). There is a mark, but it is hard to see. The pin shows a horse-head inside of a horse shoe mounted on a riding crop. There is nice detail, especially of the horse head. The horse shoe is "up" for good luck. The pin measures 1" high and 2 5/8" long and weighs 6.5 grams. There is a safety catch. The pin has been polished but still shows an attractive patina of age; it dates from between 1920 and 1970. This pin is in excellent vintage condition with no issues. Pins such as these are called "stock" pins. They were meant to be worn on the stock, or tie, of a riding habit. This is a great gift for a person who rides, especially in the English style, or for anyone who rides, or for anyone who likes horses.