In 1949, Buick’s production came to 404,695 units, the second-highest output in its history to that point. That impressive sales performance still left some room for exclusivity. The Roadmaster line, officially Series 70, offered five body styles, including a convertible, of which only 2,911 examples were built.
(description text adapted from https://www.hemmings.com/auction/1949-buick-roadmaster-548)