The Combat Masterpiece was introduced in 1949
Basicly a shorter version of the tapered barrel matte blue 6" Masterpiece replacing the Patridge with a Baughman FS and offered in .22 LR, .32 S&W Long and .38 Special calibers.
This is a fairly early example at serial K94566 that shipped in October 1950 with common early features such as matte blue finish, 6 groove tangs, "High Speed" or Fishhook hammer, "High Shoulder" diamond Magnas.
Note the Large Ampersand and blind FS pins through the barrel rib polished flush.