Formula 1 World Champions souvenir cover commemorating Jack Brabham’s World Championship victories. The cover is in excellent condition, it has been affixed with the F1 vignette stamp, cancelled with the Silverstone F1 Hall of Fame cachet, 10th Nov 2005 with the cover specially illustrated to commemorate his World Championship win featuring Brabham along with his GP race record and a brief biography of his racing career, a great collectors piece, see the picture below.