PISTOL: STEYR FIREARMS MODEL 1912 PISTOL IMPORTED BY 5623C, SERIAL NUMBER 5623C, SEMI - AUTOMATIC, 9X23, BLUE, CASE NOT INCLUDED, 5 Notes: PISTOL: STEYR FIREARMS MODEL 1912 serial number 5623C. Semi-automatic pistol chambered in 9x23mm. Features a blue finish with a lot of wear and pitting and approximately 5" barrel. Case not included. A classic military-style Steyr Model 1912 pistol with historical appeal and distinctive design.