[1] Only four 4.5 litre naturally aspirated V12 Type 145 racecars were built, all exclusively for Lucy O'Reilly Schell and her Écurie Bleue racing team.

The missing chassis number in the sequence, 48774, was the only Type 155 built — a grandprix monoposto fitted with an experimental De Dion tube independent rear suspension system and innovative geared hubs.

The only difference in the Type 145 was a pair of short rear suspension trailing arms that were supposed to improve handling.

Despite two early wins by Type 145 number 48771, the five V12s were less than successful, and by 1939 all five racecars had been consigned by owner O'Reilly Schell to the Wilson Garage's proprietor, Fernand Lacour, to sell.

From the twelve sets of V12 engine parts, Delahaye built five bodied racecars for O'Reilly Schell, and four coachbuilt grand-touring Type 165 chassis.