How's this for matching numbers?

I have a .45 ACP pistol. It was made under license from and using Colt machines by the Argentina government . It is one of 7628 made that year for the Army. So all parts are perfect interchanges for any 1911 of the time. Workmanship is good, bluing is still in great shape, and the plain wood grips have held up very well. It has standard army type sights and about a 5-6 pound trigger pull. I have had it since summer of 1970 and have put thousands of reloads thru it. Most have been light loads for punching paper. Given that's it not target pistol, it holds s pretty good group if you do your part.
Given the age of the pistol and where is was between 1946 and 1970 it's sort of wild that all the numbers match!! That's right the barrel, slide, frame, and MAG all still original !
Mike