Thanks for the information, Cyrano. Sorry for being a pest, but I have a couple more questions, in addition to date of manufacture.

Were the original factory magazines blue regardless of the finish of the pistol? I just found an S&W stamped 8-round magazine which fits flush with the base of the gun. I think the 8-round stainless magazine which was in the pistol when it was given to me must be aftermarket (it has a red follower and a black, plastic extension on the base plate).

Also, is +P ammunition a go or no-go for this model? I realize use of such ammunition will accelerate wear on any weapon; I'm simply wondering whether firing it at all is dangerous.

Thanks again!