Due to its age this brooch is unmarked but has been tested and confirmed to be made from 92.5% sterling grade silver. Please be aware that this is an antique item and so it will display wear commensurate with previous use. This includes light scratches and indentations. In addition the main pin has a historic repair and has been hard soldered in place (image 4 & 8).Overall a beautiful antique silver penannular brooch in excellent wearable condition. Before purchasing please ensure that you are certain this item will fit the intended recipient. I can be contacted if you have any further questions in this regard.