Manufactured circa 1958-1962, the Dardick 1500 uses a novel combination of a fixed in-grip magazine, an open-sided auto-ejecting three chamber cylinder and a proprietary plastic-cased triangular cartridge dubbed the "tround". This combination permits an ammunition capacity inline with an automatic pistol while retaining the simple reliability of a revolver. Additionally, the barrel is secured with a single threaded bolt and can be rapidly detached or swapped. Includes an unnumbered factory box and a full 20-count box of .38 Special "Trounds".