This appears to be a typical rebuild of the post WW II era. Most probably during the big rebuild of the Korean War era. Many of the rebuilds were sold through the old DCM program to NRA members... Note the miix of 1911 and M1911A1 parts...
https://www.milsurps.com/images/impo...00708JPG-1.jpg
https://www.milsurps.com/images/impo...00707JPG-1.jpg