Manufactured by the C.S. Shattuck Arms Co., of Hatfield, Massachusetts, from 1907-1915. The diminutive pistol has a hinged, four shot, barrel cluster with squeeze trigger in the grip. The pistol has a full nickel-plated finish. The left side of the barrel is roll-stamped: "INVISIBLE/DEFENDER" in two lines. The serial number "92" is stamped on the top of the barrel cluster and on the inside of the frame. The pistol correctly has no manufacturer's or patent markings. Includes a velvet lined presentation case.

Very good, retaining 97% period replated nickel finish with a singular flake on the left side of the front strap showing the attractively patinaed brass underneath, and some scattered light scuffs. Case is fine with one of the short ends absent. Mechanically fine.