Adopted in 1921. Manufactured without sights, with the Kokura Arsenal stamp and model nomenclature on the left side of the frame above the serial number, a bobbed double-action only hammer, a pair of ribbed grips, and a brown cord lanyard.

Very fine, with 90% of the original blue finish, showing some mild spotting, edge wear and handling marks. The otherwise fine grips show some light dents. Mechanically excellent.

Fixed sights and standard markings, with checkered grips and a cloth lanyard.

Very fine, with 95% of the arsenal refurbished blue finish, showing some mild edge wear and handling marks overall. Some spotting is present, turning into heavier pitting on the left side of the muzzle and a small but deep patch on the bottom right edge of the side plate. The grips are good, with some dents and stains. Mechanically excellent.