This is a standard steel floor plate from a Winchester Model 70 rifle.
Bluing - 98% - There is some minor bluing loss around the edges of the floor plate.
Metal - Overall, this piece is in excellent condition. There is no significant metal damage on this floor plate, but there are some minor scratches along one edge of the piece.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE