This is a type-III bolt housing for magnum caliber rifles.
Handle bluing - 85% - The handle bluing on this bolt is notably faded, particularly on the bolt knob.
Metal - This bolt is in excellent overall condition. There are no scratches, nicks, or other marks of significant metal damage on the bolt shaft or face.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about itHERE
NOTE: While model 70 bolts may appear to be interchangeable, to safely replace the bolt in a rifle requires the action to be checked for proper headspacing and lug seating. This is a simple procedure which can be performed in a matter of minutes by a qualified gunsmith.