Bruce; I have watched most online auctions for the last 6 or 7 years and have only seen one 1919 NRA in 22 Short - it had the first action design (pre-1923), have heard of a couple others, and one on a 1923 action.
I am curious about the magazine in yours - I have not found a 22 Short only magazine for the bolt actions and I doubt they made them like they did for the pump 22's. The 22 Short on the 1923 action did not have a magazine with it and by then Savage was starting to stamp the magazines just for 22 Long Rifle - makes me wonder what the original magazine would have been?
Gene
I just took these pictures a couple days ago - this seems to be a good place to post them - sights for the NRA's, I recently saw a sight with the base of a 15 that was taller like a 10, could be a transition, the parts look like they will interchange. The Lyman and Marbles mount on the wrist with wood screws.