One of less than 250 manufactured between 1955 and 1958. The Kimball was a failed attempt at producing a blowback pistol in .30 Carbine using a series of cut rings in the chamber. In theory, on ignition the casing would swell to fill these rings, delaying extraction long enough for pressure to drop. Of only about 238 manufactured, many were destroyed during use by the severe recoil, making examples in this kind of condition even rarer. Blade front and fixed notch rear sights, with the Detroit address on the left side of the chamber, serial number on the right, and finely checkered grips. With correct Kimball box and shipping sleeve.

Very good, retaining 85% plus original blue finish with light spotting overall, and a patch of light pitting by the safety. Grips are very fine with crisp checkering. Mechanically excellent. Box is fine with splits along the edges and some flaking.