brinker:  Welcome to the KCA forum.  The serial # of your Krag would place its production around September, 1903.  The 'cartouche' on the side of your stock probably has a script 'JSA' (for J.S. Adams, inspector) above the date 1903.  The stamp in the wood behind the trigger guard is probably a stylized 'P' within a circle:  this indicates the rifle was proof tested.  I don't know what you mean when you refer to your rifle as the "California Model".  I have never heard this term.  However, there was a U.S. Arsenal facility at Benicia, Calif., that did repair and refurbishment work on Krags.  Benicia is believed to have produced the so called "NRA Carbine".  This alteration was approved by the Ordnance Dept. and consisted of Krag rifles cut down to carbine length (22" barrel) with a Model 1903 front sight mounted.  These were produced in the 1920s for Civilian sales.  Since any gunsmith could produce such an arm, only a sales record can authenticate a real NRA Carbine.  The Carbine sight on your rifle is interesting.  If you can post pictures of your Krag on the forum, you will get a lot more information.