Note that single line rear registration plates (similar to the ones used by other European countries) were not available until 1976. The registration number was the provincial code, which is a two-letter code (exception: Rome's code is Roma), and a progressive code, unique for that province, up to 6 characters long. Between the provincial code and the first two digits was the Italian Republic emblem (a garland surrounding a five-pointed star with the letters "RI" in the middle of the star).