This is a standard steel trigger guard from a Winchester Model 70 rifle.
Bluing - 90% - The original bluing is dark and even without notable edgewear or fading. There are a number of scratches to the top of the bow, and a bit of rust on the underside and in one screw hole.
Metal - The metal is in excellent condition with a few scratches and a bit of rust.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE