Translations:Numerazione Carter/7/en
The first digit (or the first two digits) of the model number indicates the color and material the pen is made, which are different depending on whether it is a Carter Coralite Pen or a Carter Pearltex Pen. In the first case some were still produced in hard rubber. The color table is shown at right, the colors are: Red Polished, a solid red; Black Polished a solid black; Black Chased an enchased solid black; Red-Black Mottled, a black mottled with red; Coralite Blue a dark blue marbled; Turquoise Blue (?) brown with red; Gray Squirrel a tone from pink to lavender; Coralite Green, the classic jade green; Coralite Lacquer Red, a coral red.