Just bought this locally and it is a real nice shooter grade US&S. The only part that has been replaced is the MSH with a checked Colt type....... It is a very high number and the "P" proofs are correct...
https://www.milsurps.com/images/impo...2520LJPG-1.jpg
https://www.milsurps.com/images/impo...2520RJPG-1.jpg