1939 5C Reverse of 1938 (Regular Strike) Posted on August 17, 2014August 17, 2014 by OcalaFlorida 1939 5C Reverse of 1938 (Regular Strike) Diameter: 21.20 millimeters Designer: Felix Schlag Weight: 5.00 grams Edge: Plain Mintage: 120,627,535 Metal Content: 75% Copper, 25% Nickel Posted in Jefferson Nickel : Type 1, Original Design Clad (1938-1964), Jefferson Nickel (1938 to Date).