Jack, I have been collecting pump 22s for several years now, mostly Savage's, and there is one thing that I have learned. Once you think you have all the styles and model variations figured out something else pops up. I have never seen a Savage pump with a tube mag with a heavy cresent butt plate. The 1903 was made from 03 to around 1921, the 1914 was made from 1914 to 1924. The 1914 can be thought of as a 1903 that was converted to mag tube. I have 3 styles of stocks on 03's. The first had a longer pistol grip and the lower tang on the frame was straight. the second is the most common. and the third looks like a 1914 stock, and the frame is cut like the 1914. Now, in the good ole days gun makers did almost anything to please the customer, and yours may have been a special order, or it may have been added at a later date. Savage marked the butt plate the stock and the frame with the serial number, and that would have been the best way to determine if the stock was original. Roger