This is a standard steel floor plate from a Winchester Model 70 rifle.
Bluing - 90% - The bluing shows minor signs of wear, mostly along the edges of the piece. Overall, the bluing is even and unworn.
Metal - The metal on this piece is in very good condition. There are numerous minor scratches and nicks throughout the piece, but no significant nicks or other marks of metal damage.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE