This is an open bow style 1740-1770 era Germanic Jaeger trigger guard. The open bow is perfect for the swept back trigger style common on Jaeger muzzle loading rifles. A high quality investment casting with pineapple finials. 9-3/4" long, 15/16" wide at bow. Brass only. No. 47JA4B

Match with butt plate #481004 and Jaeger trigger #53ST31