Eddie, you are correct that the only way to identify it for sure is to see the side. The 210, and even the 150, could be ordered as a two-tone. To the best of my knowledge, the 150 lacked side molding, the 210 had a basic chrome side molding, and the Bel Air the deluxe side molding with the painted insert on the rear quarter, which matched the roof color (if two-tone, as most were).