Type 2 Markings are found on later models marked "HI-STANDARD" / "DERRINGER" and had TRIGGER logo. Early .22-caliber models marked "D-100" and later .22-caliber models beginning about 1969 were marked "D-101" on left side of barrel. .22 Magnum models marked "DM-101" on left side of barrel. Date range 1967 to about 1970.