These two! I’m pretty sure the wind-up keys are still in the box I just pulled them from. They were both made by Schuco in “Western Germany” (!) and are approximately 55 years old. The red one is “1070 Grand Prix Racer” (about 6.25" long) and the green one is “1040/1 Micro Racer Ferrari” (about 4.75" long). You can…