This is a standard receiver from a 1951 Model 70 rifle, stamped with the serial number 171821.
Bluing - 95% - The bluing shows minor signs of wear but no notable rubs or other issues.
Metal - Overall, the metal of this receiver is in excellent condition. There are a few light scratches, but no other significant marks or metal damage.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE
NOTE: Laws governing transfer of firearms require that receivers be shipped to an FFL holder. If you do not hold an FFL or C&R license, you will need to enlist the services of an FFL to complete the transfer. If needed, we are happy to assist you in locating an FFL holder near you who can complete the transfer on your end.