This is a standard steel floor plate from a Winchester Model 70 rifle.
Bluing - 95% - The bluing on this floor plate shows very minimal signs of wear but there is some light freckling emerging in the finish.
Metal - The metal on this piece is in very good condition. It does not appear there is any pitting of the underlying metal associated with the bluing freckling.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE