This is a standard steel floor plate for a Winchester Model 70 rifle.
Bluing - 95% - There is some minimal wear of the original bluing around the edges of the piece
Metal - Overall, this piece is in very good condition. There are some minor scratches on the floor plate as well as some minor pitting of the metal, but no major scratches or nicks.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE