Second race of the day and a second American victory in a row. Race A1 “Louis Chiron”, dedicated to pre-war Grand Prix cars and voiturettes, was won by Mark Gillies, the poleman in a 1934 ERA R3A, although he was overtaken at the first corner, Sainte-Dévote, by Nicholas Topliss in another ERA, a 1935 R4A.
The Briton was heading towards an almost sure win when, two laps from the checkered flag, he punctured his left rear tire when touching the Riley Dobbs driven by backmarker Thierry Chanoine. At the top of the Casino hill, he then had to park his car. Gillies was joined on the podium by Switzerland’s Anthony Sinopoli (Maserati 6CM/4CM) and above all by Patrick Blakeney-Edwards (Frazer-Nash): an amazing start allowed the British driver to jump from 12th on the grid to 4th at the first corner. Then 3rd when Topliss retired.