1973 Mallory Park with James Hunt #19. Source FB photo John Leck1973 Euro F2 Heat 1 – Dave McConnell (Surtees TS15) would finish 5th in this heat; Jo Vonlanthen (GRD 273) 10th in this heat; and John Wingfield (Brabham BT40) 12th in this heat. Photo Steve Wilkinson1973 F2 GRD 273. Hockenheimring, the first round of the 1973 Swiss F2 Championship, the 1st April 19731973 F2 Swiss Championship – Casale Monferrato – Morano. Photo Franco Prete1974 Barcelona GP. Photo Tatino Martinez1974 Hockenheim1974 Morano/Casele. Photo Gianfranco Martini1974 Karlskoga- European Championship for F2 Drivers, Round 71975 Thruxton #36 Harlad Ertl and Jo Vonlanthen XXIX B.A.R.C. 200 1975 Thruxton. Photo Christian Wolf1975 Thruxton with #7 Giancarlo Martin, #15 Jo Vonlanthen, “elf” Jen-Pierre Jabouille – XXIX B.A.R.C. 200 1975 Thruxton. Photo Christian Wolf1975 XXIX B.A.R.C. 200 1975 Thruxton. Photo Christian Wolf1975 XXIX B.A.R.C. 200 1975 Thruxton. Photo Christian Wolf1975 Hockenheim F2 March 752-BMW – X Rhein-Pokal-Rennen 1975. Source/photo Erwin Röll1975 Estoril. Photo/source original DPPI via FB