This is a standard steel trigger guard from a Winchester Model 70 rifle.
Bluing - 90% - The original bluing on this trigger guard shows almost no edgewear or thinning. It contains 1 notable blemish at the top of the bow, and a few small nicks and scratches.
Metal - The metal is excellent condition, with one ding to the edge of the bow, likely from the slip of a tool.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE