Original 1974 Buick/Opel Dealer Data Book. This Salesmen's Reference Album was used to help with new car sales. It covers the Full Line of Buick Models for 1974 including Opel. It shows Features, Options, and Specs for these Cars. It is not in the original binder and is in good condition with minor wear, soiling, and blemishing [see photos]. Very rare Dealer only item that is informative and a great Display Piece.