I hear you Have Gun-Will Travel. I, too, like my pistols unmarked. However, keep this in mind. I have been collecting S&W 3rd generation autos fairly seriously since about January 2007. I have about 22 of them now and have had another 10 or more pass through my hands (i.e., I bought them and later sold them). I keep an eye on my local gun shops and shows in Ventura and Orange County, California, and my brother keeps his eye open where he lives in Bakersfield (Kern County), California. We both attend the large 3-day Crossroads of the West gun show in Phoenix, Arizona, each December.
I have personally seen
only one 4576. It's the one you see in the photo in my previous post. On the other hand, I have seen a fair number of 1076 and a few 1026 pistols, but only one 4576.
So, you do what you think is best for you. Good luck with your decision. I made mine a few years ago.