Just under 13,000 of these palm pistols were manufactured by Chicago Firearms Co. in the 1890s, with only 1,000 in the 3700-5400 serial number range estimated to have blue finish like this example. The right side is marked "THE PROTECTOR PAT.MCH.6.83.AUG.29.93" in a circle at the center. The removable left side plate is marked "CHICAGO FIRE ARMS CO. CHICAGO, ILL" in a circle at the center and has a textured border. The matching serial number is marked on the inside of the frame, on the side plate, and on the cartridge block. It has a checkered hard rubber plunger pad and matching side plate inserts. Includes a green Chicago Firearms Co. factory box with white "THE IMPROVED PROTECTOR" label on the lid.

Very fine, retains 75% original blue finish with the balance a brown-grey patina. The grips are very good with the left side panel warped outward with age and showing moderate wear, some scattered light handling marks, generally mild wear from use, and the plunger pad showing crisp checkering. Mechanically excellent. The box is fine with moderate wear, mild staining, and the label nearly complete. A very fine example of a scarce and desirable blue finish Chicago Firearms Co. Protector Palm Pistol with scarce box.