Castrol 1951 Porsche 356SL Poster Photo and type composition for this commemorative poster featuring Porsche's class victories at Le Mans, Liege-Rome-Liege, and Tour de France. One of 5 discovered more than 20 years ago.  The only poster I have ever seen that has a "poster stamp" affixed to it, indicating their showing the a International Auto Show in Frankfurt,  and additionally stamped Hall 3, Stand 49.  Outstanding colors and condition.  17" x 24.5", LM  2.24