Wow, that's a nice clean unit with all of the updates done to it. We can tell that by the dots in between the USA, ie., U.S.A.
That meant, in house, that that slide had the firing pin hole moved over a few thousandths so it would contact the ammunition dead center instead of slightly to the side. But yes, all of the updates that were available through the factory are done to this pistol.
Good Luck with your sale!
Regards.
Eric R.