Martini Porsche 917K #3 Sebring 12 Hours Vic Elford Victory Tee Shirt by N. Hinziker. Porsche 917 Sebring 12 Hours 1971 Victory Tee Shirt. Vic Elford Collection By Nicolas Hunziker. Heavyweight 5.4 oz shirts are made of 100% pre-shrunk cotton and feature a taped neck to shoulder seam US sizes (bigger than European sizes), see sizes chart.