Sorry your missing the difference between what it was to be a 3 year old when they were a 2:30 class, win your 1st 3 year old you were a 2:29 class, win your 2nd 3 year old you were a 2:28 class. Turn 4 years old you were classed as a beginner or a novice which was a 2:28 class horse which is the same as a C0 class horse today. But now a day if you won 1 or 2 C class races as a 3 year old you are not eligible for a C0 only class race. Under the old system that I'm talking about you were. Theoretically you could win 6 races as a 2 year old and 2 races as a 3 year old and when you turned 4 years old you were then in what is today a C0 only.