1961-D 5C (Regular Strike) Posted on August 20, 2014August 20, 2014 by OcalaFlorida 1961-D 5C (Regular Strike) Diameter: 21.20 millimeters Designer: Felix Schlag Weight: 5.00 grams Edge: Plain Mintage: 229,342,760 Metal Content: 75% Copper, 25% Nickel Posted in Jefferson Nickel : Type 1, Original Design Clad (1938-1964), Jefferson Nickel (1938 to Date).