Like TSMGguy said, look for the brazing on the upper end. The feet are also nicely Tig'd onto the legs of an original. If it has not been used much like mine, you can also see the magnafluxing proof marks in green ink. Here are some shots of mine.
http://i349.photobucket.com/albums/q386/Millerbuilt_MS/Guns/DSCN0423.jpg
http://i349.photobucket.com/albums/q386/Millerbuilt_MS/Guns/DSCN0427.jpg
http://i349.photobucket.com/albums/q386/Millerbuilt_MS/Guns/DSCN0424.jpg