Very nice catch.
I have at least 1 S&W from each decade starting with an M&P target made in 1904 and ending with a 4" HB Model 64 made in 1980. While they are all good, in my opinion the early 1950s through the end of the Wesson family ownership of the company was truly the golden age of S&W. The 50's saw many improvements to their core products as well as the introduction of many exiting new products such as the Combat Magnum, .44 Mag, 9mm auto, and J frame .38s. I also believe that workmanship and quality maintained a high level during this period but began a noticeable decline soon after the Punta Bangor era began.
Your Combat Magnum really is a beauty. I would not think too much about what it cost.
I have 3 S&Ws from the 50,s and one made right before Punta Bangor. A K-22 made in 1950, a pre model number 30 from 1955,a Model 42 from 1959 and a Model 29-2 from 1966.
I paid $475 for the K-22 in 2007. It seemed like a lot to pay at the time and I had buyers remorse for a while. But looking back I now appreciate that it was a sound investment in a quality gun.