The porsche 911 prototype was unveiled in 1963 which makes this year the 50th anniversary of the iconic sports car pistonheads celebrate fifty years of coolt shirt design reads 50 years of coolour crew neck short sleeved mens t shirts are 100 premium cotton in a soft pre shrunk jersey knit our womens t shirts are lighter weight 150g tees made with deluxe 30s soft style yarns for a soft feel