I carried a S&W 59 as my first duty gun many years ago. I loved the gun, it was extremely reliable and accurate. Mines was the aluminum alloy lower with a stainless slide instead of nickel plated, I've only seen one other like it and I have no idea why it was different from all the others. Maybe the original owner had the nickel plate removed, if that's even possible. Stupidly, I sold it when I switched to a G21, not realizing the incredible sentimental value it would have to me. It was not only my first duty gun but my first handgun ever. I've searched forever trying to find another but that finish combo is all but impossible to find. I located one for sale but it had just sold hours before I came across it.
The guns later in the series are far more popular but dang I wish I had another 59. The later guns in the series are great choices for such a project, they are built like tanks and look great too.