This is a standard steel trigger guard from a Winchester Model 70 rifle.
Bluing - 80% - The original bluing on this trigger guard shows some edgewear and fading. There are also a few small light scratches and possible tool marks.
Metal - The metal is very good condition. There's a tiny ding to the metal on the edge of the bow, and some scuffs on the underside of the bow.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE