You might be right. The vendor calls it a 1934 Ariès CB4 with a 1.8 litre engine. The CB4 would make it (according to Bellu) a 9/40, which had just a 1.5 litre engine. The year 1934 could make it a 1.6 litre 10/40 or a 1.8 litre 10/50 Super, but the later one seems to have had a slightly modernized saloon body. But it seems to be the best guess.