A superb original colour slide from the estate of renowned Ferrari historian Jess G. Pourret, accompanied by a modern photographic print produced from the original transparency. The image depicts Ferrari 250 GTO chassis 3607 GT at the Tour de France of 1964. The original slide is annotated in Pourret's hand identifying the event and chassis. The transparency formed part of the photographic archive assembled by Pourret and was retained for use in the preparation of his Ferrari publications. An original working photograph from one of the foremost authorities on Ferrari history.